Home / 15,215,098,012.11-20,988,111,716.93-9,489,441,994.31

Finding the Fourth Proportional to 15,215,098,012.11, 20,988,111,716.93 and 9,489,441,994.31

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Solution

The fourth proportional to 15,215,098,012.11, 20,988,111,716.93 and 9,489,441,994.31 is: 13,089,989,203.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,215,098,012.11 : 20,988,111,716.93 = 9,489,441,994.31 : x
  2. Step 2: Convert to fraction form
    15,215,098,012.11/20,988,111,716.93 = 9,489,441,994.31/x
  3. Step 3: Cross multiply
    15,215,098,012.11x = 20,988,111,716.93 × 9,489,441,994.31
  4. Step 4: Simplify right side
    15,215,098,012.11x = 199,165,468,707,905,273,856
  5. Step 5: Solve for x
    x = 199,165,468,707,905,273,856/15,215,098,012.11
  6. Step 6: Final answer
    x = 13,089,989,203.45

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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.