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Finding the Fourth Proportional to 39,791.70, 59,688.20 and 13,497.12

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Solution

The fourth proportional to 39,791.70, 59,688.20 and 13,497.12 is: 20,245.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,791.70 : 59,688.20 = 13,497.12 : x
  2. Step 2: Convert to fraction form
    39,791.70/59,688.20 = 13,497.12/x
  3. Step 3: Cross multiply
    39,791.70x = 59,688.20 × 13,497.12
  4. Step 4: Simplify right side
    39,791.70x = 805,618,831.73
  5. Step 5: Solve for x
    x = 805,618,831.73/39,791.70
  6. Step 6: Final answer
    x = 20,245.90

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1.5x scale

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.