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Finding the Fourth Proportional to 22,862.70, 34,245.45 and 18,974.70

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Solution

The fourth proportional to 22,862.70, 34,245.45 and 18,974.70 is: 28,421.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,862.70 : 34,245.45 = 18,974.70 : x
  2. Step 2: Convert to fraction form
    22,862.70/34,245.45 = 18,974.70/x
  3. Step 3: Cross multiply
    22,862.70x = 34,245.45 × 18,974.70
  4. Step 4: Simplify right side
    22,862.70x = 649,797,140.12
  5. Step 5: Solve for x
    x = 649,797,140.12/22,862.70
  6. Step 6: Final answer
    x = 28,421.71

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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.