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Finding the Fourth Proportional to 39,841.80, 59,748.42 and 13,182.88

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Solution

The fourth proportional to 39,841.80, 59,748.42 and 13,182.88 is: 19,769.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,841.80 : 59,748.42 = 13,182.88 : x
  2. Step 2: Convert to fraction form
    39,841.80/59,748.42 = 13,182.88/x
  3. Step 3: Cross multiply
    39,841.80x = 59,748.42 × 13,182.88
  4. Step 4: Simplify right side
    39,841.80x = 787,656,251.05
  5. Step 5: Solve for x
    x = 787,656,251.05/39,841.80
  6. Step 6: Final answer
    x = 19,769.60

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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.