Home / 13,507,564,972.21-18,640,441,428.59-7,486,459,101.02

Finding the Fourth Proportional to 13,507,564,972.21, 18,640,441,428.59 and 7,486,459,101.02

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Solution

The fourth proportional to 13,507,564,972.21, 18,640,441,428.59 and 7,486,459,101.02 is: 10,331,314,538.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,507,564,972.21 : 18,640,441,428.59 = 7,486,459,101.02 : x
  2. Step 2: Convert to fraction form
    13,507,564,972.21/18,640,441,428.59 = 7,486,459,101.02/x
  3. Step 3: Cross multiply
    13,507,564,972.21x = 18,640,441,428.59 × 7,486,459,101.02
  4. Step 4: Simplify right side
    13,507,564,972.21x = 139,550,902,380,097,863,680
  5. Step 5: Solve for x
    x = 139,550,902,380,097,863,680/13,507,564,972.21
  6. Step 6: Final answer
    x = 10,331,314,538.72

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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.