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Finding the Fourth Proportional to 14,671.52, 20,247.52 and 8,385.92

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Solution

The fourth proportional to 14,671.52, 20,247.52 and 8,385.92 is: 11,573.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,671.52 : 20,247.52 = 8,385.92 : x
  2. Step 2: Convert to fraction form
    14,671.52/20,247.52 = 8,385.92/x
  3. Step 3: Cross multiply
    14,671.52x = 20,247.52 × 8,385.92
  4. Step 4: Simplify right side
    14,671.52x = 169,794,082.92
  5. Step 5: Solve for x
    x = 169,794,082.92/14,671.52
  6. Step 6: Final answer
    x = 11,573.04

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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.