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Finding the Fourth Proportional to 25,387.52, 38,082.68 and 7,855.97

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Solution

The fourth proportional to 25,387.52, 38,082.68 and 7,855.97 is: 11,784.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,387.52 : 38,082.68 = 7,855.97 : x
  2. Step 2: Convert to fraction form
    25,387.52/38,082.68 = 7,855.97/x
  3. Step 3: Cross multiply
    25,387.52x = 38,082.68 × 7,855.97
  4. Step 4: Simplify right side
    25,387.52x = 299,176,161.91
  5. Step 5: Solve for x
    x = 299,176,161.91/25,387.52
  6. Step 6: Final answer
    x = 11,784.38

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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.