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Finding the Fourth Proportional to 18,129.97, 25,006.65 and 17,520.34

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Solution

The fourth proportional to 18,129.97, 25,006.65 and 17,520.34 is: 24,165.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,129.97 : 25,006.65 = 17,520.34 : x
  2. Step 2: Convert to fraction form
    18,129.97/25,006.65 = 17,520.34/x
  3. Step 3: Cross multiply
    18,129.97x = 25,006.65 × 17,520.34
  4. Step 4: Simplify right side
    18,129.97x = 438,125,010.26
  5. Step 5: Solve for x
    x = 438,125,010.26/18,129.97
  6. Step 6: Final answer
    x = 24,165.79

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Half scale
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Double scale
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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.