Home / 13,319,153.28-18,380,447.78-7,207,581.78

Finding the Fourth Proportional to 13,319,153.28, 18,380,447.78 and 7,207,581.78

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Solution

The fourth proportional to 13,319,153.28, 18,380,447.78 and 7,207,581.78 is: 9,946,471.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,319,153.28 : 18,380,447.78 = 7,207,581.78 : x
  2. Step 2: Convert to fraction form
    13,319,153.28/18,380,447.78 = 7,207,581.78/x
  3. Step 3: Cross multiply
    13,319,153.28x = 18,380,447.78 × 7,207,581.78
  4. Step 4: Simplify right side
    13,319,153.28x = 132,478,580,491,331.53
  5. Step 5: Solve for x
    x = 132,478,580,491,331.53/13,319,153.28
  6. Step 6: Final answer
    x = 9,946,471.65

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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.