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Finding the Fourth Proportional to 15,294.92, 22,915.80 and 8,279.76

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Solution

The fourth proportional to 15,294.92, 22,915.80 and 8,279.76 is: 12,405.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,294.92 : 22,915.80 = 8,279.76 : x
  2. Step 2: Convert to fraction form
    15,294.92/22,915.80 = 8,279.76/x
  3. Step 3: Cross multiply
    15,294.92x = 22,915.80 × 8,279.76
  4. Step 4: Simplify right side
    15,294.92x = 189,737,324.21
  5. Step 5: Solve for x
    x = 189,737,324.21/15,294.92
  6. Step 6: Final answer
    x = 12,405.25

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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.