Home / 13,507,564,986.09-18,640,441,447.56-7,486,459,114.91

Finding the Fourth Proportional to 13,507,564,986.09, 18,640,441,447.56 and 7,486,459,114.91

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Solution

The fourth proportional to 13,507,564,986.09, 18,640,441,447.56 and 7,486,459,114.91 is: 10,331,314,557.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,507,564,986.09 : 18,640,441,447.56 = 7,486,459,114.91 : x
  2. Step 2: Convert to fraction form
    13,507,564,986.09/18,640,441,447.56 = 7,486,459,114.91/x
  3. Step 3: Cross multiply
    13,507,564,986.09x = 18,640,441,447.56 × 7,486,459,114.91
  4. Step 4: Simplify right side
    13,507,564,986.09x = 139,550,902,780,938,518,528
  5. Step 5: Solve for x
    x = 139,550,902,780,938,518,528/13,507,564,986.09
  6. Step 6: Final answer
    x = 10,331,314,557.78

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Half scale
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Double scale
Find fourth proportional to 13,507,564,987.09, 18,640,441,448.94 and 7,486,459,115.91
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.