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Finding the Fourth Proportional to 15,027.52, 20,738.34 and 8,313.28

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Solution

The fourth proportional to 15,027.52, 20,738.34 and 8,313.28 is: 11,472.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,027.52 : 20,738.34 = 8,313.28 : x
  2. Step 2: Convert to fraction form
    15,027.52/20,738.34 = 8,313.28/x
  3. Step 3: Cross multiply
    15,027.52x = 20,738.34 × 8,313.28
  4. Step 4: Simplify right side
    15,027.52x = 172,403,627.16
  5. Step 5: Solve for x
    x = 172,403,627.16/15,027.52
  6. Step 6: Final answer
    x = 11,472.53

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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.