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Finding the Fourth Proportional to 25,691.58, 38,530.62 and 9,898.74

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Solution

The fourth proportional to 25,691.58, 38,530.62 and 9,898.74 is: 14,845.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,691.58 : 38,530.62 = 9,898.74 : x
  2. Step 2: Convert to fraction form
    25,691.58/38,530.62 = 9,898.74/x
  3. Step 3: Cross multiply
    25,691.58x = 38,530.62 × 9,898.74
  4. Step 4: Simplify right side
    25,691.58x = 381,404,589.42
  5. Step 5: Solve for x
    x = 381,404,589.42/25,691.58
  6. Step 6: Final answer
    x = 14,845.51

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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.