Home / 20,217.75-30,330.02-9,124.20

Finding the Fourth Proportional to 20,217.75, 30,330.02 and 9,124.20

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Solution

The fourth proportional to 20,217.75, 30,330.02 and 9,124.20 is: 13,687.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,217.75 : 30,330.02 = 9,124.20 : x
  2. Step 2: Convert to fraction form
    20,217.75/30,330.02 = 9,124.20/x
  3. Step 3: Cross multiply
    20,217.75x = 30,330.02 × 9,124.20
  4. Step 4: Simplify right side
    20,217.75x = 276,737,168.48
  5. Step 5: Solve for x
    x = 276,737,168.48/20,217.75
  6. Step 6: Final answer
    x = 13,687.83

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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.