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Finding the Fourth Proportional to 25,915.52, 38,872.74 and 7,447.52

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Solution

The fourth proportional to 25,915.52, 38,872.74 and 7,447.52 is: 11,171.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,915.52 : 38,872.74 = 7,447.52 : x
  2. Step 2: Convert to fraction form
    25,915.52/38,872.74 = 7,447.52/x
  3. Step 3: Cross multiply
    25,915.52x = 38,872.74 × 7,447.52
  4. Step 4: Simplify right side
    25,915.52x = 289,505,508.60
  5. Step 5: Solve for x
    x = 289,505,508.60/25,915.52
  6. Step 6: Final answer
    x = 11,171.12

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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.