Home / 39,802.70-59,691.33-13,143.72

Finding the Fourth Proportional to 39,802.70, 59,691.33 and 13,143.72

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Solution

The fourth proportional to 39,802.70, 59,691.33 and 13,143.72 is: 19,711.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,802.70 : 59,691.33 = 13,143.72 : x
  2. Step 2: Convert to fraction form
    39,802.70/59,691.33 = 13,143.72/x
  3. Step 3: Cross multiply
    39,802.70x = 59,691.33 × 13,143.72
  4. Step 4: Simplify right side
    39,802.70x = 784,566,127.95
  5. Step 5: Solve for x
    x = 784,566,127.95/39,802.70
  6. Step 6: Final answer
    x = 19,711.38

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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.