Home / 20,701.27-31,049.11-12,382.53

Finding the Fourth Proportional to 20,701.27, 31,049.11 and 12,382.53

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Solution

The fourth proportional to 20,701.27, 31,049.11 and 12,382.53 is: 18,572.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,701.27 : 31,049.11 = 12,382.53 : x
  2. Step 2: Convert to fraction form
    20,701.27/31,049.11 = 12,382.53/x
  3. Step 3: Cross multiply
    20,701.27x = 31,049.11 × 12,382.53
  4. Step 4: Simplify right side
    20,701.27x = 384,466,536.05
  5. Step 5: Solve for x
    x = 384,466,536.05/20,701.27
  6. Step 6: Final answer
    x = 18,572.12

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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.