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Finding the Fourth Proportional to 15,071.52, 20,801.20 and 10,351.92

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Solution

The fourth proportional to 15,071.52, 20,801.20 and 10,351.92 is: 14,287.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,071.52 : 20,801.20 = 10,351.92 : x
  2. Step 2: Convert to fraction form
    15,071.52/20,801.20 = 10,351.92/x
  3. Step 3: Cross multiply
    15,071.52x = 20,801.20 × 10,351.92
  4. Step 4: Simplify right side
    15,071.52x = 215,332,358.30
  5. Step 5: Solve for x
    x = 215,332,358.30/15,071.52
  6. Step 6: Final answer
    x = 14,287.37

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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.