Home / 21,182.10-31,773.15-20,793.30

Finding the Fourth Proportional to 21,182.10, 31,773.15 and 20,793.30

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Solution

The fourth proportional to 21,182.10, 31,773.15 and 20,793.30 is: 31,189.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,182.10 : 31,773.15 = 20,793.30 : x
  2. Step 2: Convert to fraction form
    21,182.10/31,773.15 = 20,793.30/x
  3. Step 3: Cross multiply
    21,182.10x = 31,773.15 × 20,793.30
  4. Step 4: Simplify right side
    21,182.10x = 660,668,639.90
  5. Step 5: Solve for x
    x = 660,668,639.90/21,182.10
  6. Step 6: Final answer
    x = 31,189.95

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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.