Home / 25,729.68-38,534.04-12,540.72

Finding the Fourth Proportional to 25,729.68, 38,534.04 and 12,540.72

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Solution

The fourth proportional to 25,729.68, 38,534.04 and 12,540.72 is: 18,781.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,729.68 : 38,534.04 = 12,540.72 : x
  2. Step 2: Convert to fraction form
    25,729.68/38,534.04 = 12,540.72/x
  3. Step 3: Cross multiply
    25,729.68x = 38,534.04 × 12,540.72
  4. Step 4: Simplify right side
    25,729.68x = 483,244,606.11
  5. Step 5: Solve for x
    x = 483,244,606.11/25,729.68
  6. Step 6: Final answer
    x = 18,781.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.