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Finding the Fourth Proportional to 15,064.29, 20,787.96 and 8,349.86

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Solution

The fourth proportional to 15,064.29, 20,787.96 and 8,349.86 is: 11,522.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,064.29 : 20,787.96 = 8,349.86 : x
  2. Step 2: Convert to fraction form
    15,064.29/20,787.96 = 8,349.86/x
  3. Step 3: Cross multiply
    15,064.29x = 20,787.96 × 8,349.86
  4. Step 4: Simplify right side
    15,064.29x = 173,576,451.75
  5. Step 5: Solve for x
    x = 173,576,451.75/15,064.29
  6. Step 6: Final answer
    x = 11,522.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.