Home / 25,198.79-34,778.16-15,132.78

Finding the Fourth Proportional to 25,198.79, 34,778.16 and 15,132.78

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Solution

The fourth proportional to 25,198.79, 34,778.16 and 15,132.78 is: 20,885.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,198.79 : 34,778.16 = 15,132.78 : x
  2. Step 2: Convert to fraction form
    25,198.79/34,778.16 = 15,132.78/x
  3. Step 3: Cross multiply
    25,198.79x = 34,778.16 × 15,132.78
  4. Step 4: Simplify right side
    25,198.79x = 526,290,168.42
  5. Step 5: Solve for x
    x = 526,290,168.42/25,198.79
  6. Step 6: Final answer
    x = 20,885.53

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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.