Home / 10,428.13-15,641.79-3,854.17

Finding the Fourth Proportional to 10,428.13, 15,641.79 and 3,854.17

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Solution

The fourth proportional to 10,428.13, 15,641.79 and 3,854.17 is: 5,781.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,428.13 : 15,641.79 = 3,854.17 : x
  2. Step 2: Convert to fraction form
    10,428.13/15,641.79 = 3,854.17/x
  3. Step 3: Cross multiply
    10,428.13x = 15,641.79 × 3,854.17
  4. Step 4: Simplify right side
    10,428.13x = 60,286,117.76
  5. Step 5: Solve for x
    x = 60,286,117.76/10,428.13
  6. Step 6: Final answer
    x = 5,781.11

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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.