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Finding the Fourth Proportional to 15,027.92, 20,738.20 and 8,313.28

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Solution

The fourth proportional to 15,027.92, 20,738.20 and 8,313.28 is: 11,472.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,027.92 : 20,738.20 = 8,313.28 : x
  2. Step 2: Convert to fraction form
    15,027.92/20,738.20 = 8,313.28/x
  3. Step 3: Cross multiply
    15,027.92x = 20,738.20 × 8,313.28
  4. Step 4: Simplify right side
    15,027.92x = 172,402,463.30
  5. Step 5: Solve for x
    x = 172,402,463.30/15,027.92
  6. Step 6: Final answer
    x = 11,472.14

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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.