Home / 20,432.64-30,589.20-15,521.52

Finding the Fourth Proportional to 20,432.64, 30,589.20 and 15,521.52

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Solution

The fourth proportional to 20,432.64, 30,589.20 and 15,521.52 is: 23,236.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,432.64 : 30,589.20 = 15,521.52 : x
  2. Step 2: Convert to fraction form
    20,432.64/30,589.20 = 15,521.52/x
  3. Step 3: Cross multiply
    20,432.64x = 30,589.20 × 15,521.52
  4. Step 4: Simplify right side
    20,432.64x = 474,790,879.58
  5. Step 5: Solve for x
    x = 474,790,879.58/20,432.64
  6. Step 6: Final answer
    x = 23,236.88

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1.5x scale

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.