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Finding the Fourth Proportional to 22,375.80, 30,873.10 and 13,423.96

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Solution

The fourth proportional to 22,375.80, 30,873.10 and 13,423.96 is: 18,521.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,375.80 : 30,873.10 = 13,423.96 : x
  2. Step 2: Convert to fraction form
    22,375.80/30,873.10 = 13,423.96/x
  3. Step 3: Cross multiply
    22,375.80x = 30,873.10 × 13,423.96
  4. Step 4: Simplify right side
    22,375.80x = 414,439,259.48
  5. Step 5: Solve for x
    x = 414,439,259.48/22,375.80
  6. Step 6: Final answer
    x = 18,521.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.