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Finding the Fourth Proportional to 18,520.38, 25,558 and 10,562.42

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Solution

The fourth proportional to 18,520.38, 25,558 and 10,562.42 is: 14,576.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,520.38 : 25,558 = 10,562.42 : x
  2. Step 2: Convert to fraction form
    18,520.38/25,558 = 10,562.42/x
  3. Step 3: Cross multiply
    18,520.38x = 25,558 × 10,562.42
  4. Step 4: Simplify right side
    18,520.38x = 269,954,330.36
  5. Step 5: Solve for x
    x = 269,954,330.36/18,520.38
  6. Step 6: Final answer
    x = 14,576.07

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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.