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Finding the Fourth Proportional to 15,027.34, 20,737.05 and 8,221.24

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Solution

The fourth proportional to 15,027.34, 20,737.05 and 8,221.24 is: 11,344.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,027.34 : 20,737.05 = 8,221.24 : x
  2. Step 2: Convert to fraction form
    15,027.34/20,737.05 = 8,221.24/x
  3. Step 3: Cross multiply
    15,027.34x = 20,737.05 × 8,221.24
  4. Step 4: Simplify right side
    15,027.34x = 170,484,264.94
  5. Step 5: Solve for x
    x = 170,484,264.94/15,027.34
  6. Step 6: Final answer
    x = 11,344.94

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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.