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Finding the Fourth Proportional to 39,393.30, 59,089.82 and 11,691.30

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Solution

The fourth proportional to 39,393.30, 59,089.82 and 11,691.30 is: 17,536.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,393.30 : 59,089.82 = 11,691.30 : x
  2. Step 2: Convert to fraction form
    39,393.30/59,089.82 = 11,691.30/x
  3. Step 3: Cross multiply
    39,393.30x = 59,089.82 × 11,691.30
  4. Step 4: Simplify right side
    39,393.30x = 690,836,812.57
  5. Step 5: Solve for x
    x = 690,836,812.57/39,393.30
  6. Step 6: Final answer
    x = 17,536.91

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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.