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Finding the Fourth Proportional to 18,171.90, 25,122.24 and 18,005.82

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Solution

The fourth proportional to 18,171.90, 25,122.24 and 18,005.82 is: 24,892.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,171.90 : 25,122.24 = 18,005.82 : x
  2. Step 2: Convert to fraction form
    18,171.90/25,122.24 = 18,005.82/x
  3. Step 3: Cross multiply
    18,171.90x = 25,122.24 × 18,005.82
  4. Step 4: Simplify right side
    18,171.90x = 452,346,531.44
  5. Step 5: Solve for x
    x = 452,346,531.44/18,171.90
  6. Step 6: Final answer
    x = 24,892.64

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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.