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Finding the Fourth Proportional to 29,473.88, 40,687.86 and 18,869.66

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Solution

The fourth proportional to 29,473.88, 40,687.86 and 18,869.66 is: 26,049.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,473.88 : 40,687.86 = 18,869.66 : x
  2. Step 2: Convert to fraction form
    29,473.88/40,687.86 = 18,869.66/x
  3. Step 3: Cross multiply
    29,473.88x = 40,687.86 × 18,869.66
  4. Step 4: Simplify right side
    29,473.88x = 767,766,084.33
  5. Step 5: Solve for x
    x = 767,766,084.33/29,473.88
  6. Step 6: Final answer
    x = 26,049.03

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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.