Home / 10,428.31-15,641.55-3,854.55

Finding the Fourth Proportional to 10,428.31, 15,641.55 and 3,854.55

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Solution

The fourth proportional to 10,428.31, 15,641.55 and 3,854.55 is: 5,781.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,428.31 : 15,641.55 = 3,854.55 : x
  2. Step 2: Convert to fraction form
    10,428.31/15,641.55 = 3,854.55/x
  3. Step 3: Cross multiply
    10,428.31x = 15,641.55 × 3,854.55
  4. Step 4: Simplify right side
    10,428.31x = 60,291,136.55
  5. Step 5: Solve for x
    x = 60,291,136.55/10,428.31
  6. Step 6: Final answer
    x = 5,781.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.