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Finding the Fourth Proportional to 29,531.12, 40,754.04 and 18,198.32

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Solution

The fourth proportional to 29,531.12, 40,754.04 and 18,198.32 is: 25,114.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,531.12 : 40,754.04 = 18,198.32 : x
  2. Step 2: Convert to fraction form
    29,531.12/40,754.04 = 18,198.32/x
  3. Step 3: Cross multiply
    29,531.12x = 40,754.04 × 18,198.32
  4. Step 4: Simplify right side
    29,531.12x = 741,655,061.21
  5. Step 5: Solve for x
    x = 741,655,061.21/29,531.12
  6. Step 6: Final answer
    x = 25,114.36

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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.