Home / 15,147.12-20,902.80-8,432.73

Finding the Fourth Proportional to 15,147.12, 20,902.80 and 8,432.73

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Solution

The fourth proportional to 15,147.12, 20,902.80 and 8,432.73 is: 11,637.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,147.12 : 20,902.80 = 8,432.73 : x
  2. Step 2: Convert to fraction form
    15,147.12/20,902.80 = 8,432.73/x
  3. Step 3: Cross multiply
    15,147.12x = 20,902.80 × 8,432.73
  4. Step 4: Simplify right side
    15,147.12x = 176,267,668.64
  5. Step 5: Solve for x
    x = 176,267,668.64/15,147.12
  6. Step 6: Final answer
    x = 11,637.04

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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.