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Finding the Fourth Proportional to 15,027.52, 20,737.80 and 8,312.62

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Solution

The fourth proportional to 15,027.52, 20,737.80 and 8,312.62 is: 11,471.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,027.52 : 20,737.80 = 8,312.62 : x
  2. Step 2: Convert to fraction form
    15,027.52/20,737.80 = 8,312.62/x
  3. Step 3: Cross multiply
    15,027.52x = 20,737.80 × 8,312.62
  4. Step 4: Simplify right side
    15,027.52x = 172,385,451.04
  5. Step 5: Solve for x
    x = 172,385,451.04/15,027.52
  6. Step 6: Final answer
    x = 11,471.32

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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.