Home / 20,432.28-30,524.22-12,977.04

Finding the Fourth Proportional to 20,432.28, 30,524.22 and 12,977.04

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Solution

The fourth proportional to 20,432.28, 30,524.22 and 12,977.04 is: 19,386.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,432.28 : 30,524.22 = 12,977.04 : x
  2. Step 2: Convert to fraction form
    20,432.28/30,524.22 = 12,977.04/x
  3. Step 3: Cross multiply
    20,432.28x = 30,524.22 × 12,977.04
  4. Step 4: Simplify right side
    20,432.28x = 396,114,023.91
  5. Step 5: Solve for x
    x = 396,114,023.91/20,432.28
  6. Step 6: Final answer
    x = 19,386.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.