Home / 25,728.56-38,581.90-15,865.19

Finding the Fourth Proportional to 25,728.56, 38,581.90 and 15,865.19

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Solution

The fourth proportional to 25,728.56, 38,581.90 and 15,865.19 is: 23,791.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,728.56 : 38,581.90 = 15,865.19 : x
  2. Step 2: Convert to fraction form
    25,728.56/38,581.90 = 15,865.19/x
  3. Step 3: Cross multiply
    25,728.56x = 38,581.90 × 15,865.19
  4. Step 4: Simplify right side
    25,728.56x = 612,109,230.85
  5. Step 5: Solve for x
    x = 612,109,230.85/25,728.56
  6. Step 6: Final answer
    x = 23,791.04

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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.