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Finding the Fourth Proportional to 15,027.72, 20,737.89 and 8,313.39

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Solution

The fourth proportional to 15,027.72, 20,737.89 and 8,313.39 is: 11,472.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,027.72 : 20,737.89 = 8,313.39 : x
  2. Step 2: Convert to fraction form
    15,027.72/20,737.89 = 8,313.39/x
  3. Step 3: Cross multiply
    15,027.72x = 20,737.89 × 8,313.39
  4. Step 4: Simplify right side
    15,027.72x = 172,402,167.35
  5. Step 5: Solve for x
    x = 172,402,167.35/15,027.72
  6. Step 6: Final answer
    x = 11,472.28

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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.