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Finding the Fourth Proportional to 29,188.50, 40,286.43 and 18,575.88

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Solution

The fourth proportional to 29,188.50, 40,286.43 and 18,575.88 is: 25,638.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,188.50 : 40,286.43 = 18,575.88 : x
  2. Step 2: Convert to fraction form
    29,188.50/40,286.43 = 18,575.88/x
  3. Step 3: Cross multiply
    29,188.50x = 40,286.43 × 18,575.88
  4. Step 4: Simplify right side
    29,188.50x = 748,355,889.31
  5. Step 5: Solve for x
    x = 748,355,889.31/29,188.50
  6. Step 6: Final answer
    x = 25,638.72

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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.