Home / 12,520.97-17,292.23-8,505.69

Finding the Fourth Proportional to 12,520.97, 17,292.23 and 8,505.69

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Solution

The fourth proportional to 12,520.97, 17,292.23 and 8,505.69 is: 11,746.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,520.97 : 17,292.23 = 8,505.69 : x
  2. Step 2: Convert to fraction form
    12,520.97/17,292.23 = 8,505.69/x
  3. Step 3: Cross multiply
    12,520.97x = 17,292.23 × 8,505.69
  4. Step 4: Simplify right side
    12,520.97x = 147,082,305.26
  5. Step 5: Solve for x
    x = 147,082,305.26/12,520.97
  6. Step 6: Final answer
    x = 11,746.88

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Half scale
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Double scale
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Similar ratio
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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.