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Finding the Fourth Proportional to 29,151.31, 40,235.19 and 18,538.87

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Solution

The fourth proportional to 29,151.31, 40,235.19 and 18,538.87 is: 25,587.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,151.31 : 40,235.19 = 18,538.87 : x
  2. Step 2: Convert to fraction form
    29,151.31/40,235.19 = 18,538.87/x
  3. Step 3: Cross multiply
    29,151.31x = 40,235.19 × 18,538.87
  4. Step 4: Simplify right side
    29,151.31x = 745,914,956.84
  5. Step 5: Solve for x
    x = 745,914,956.84/29,151.31
  6. Step 6: Final answer
    x = 25,587.70

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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.