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Finding the Fourth Proportional to 18,377.52, 25,369.56 and 10,821.42

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Solution

The fourth proportional to 18,377.52, 25,369.56 and 10,821.42 is: 14,938.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,377.52 : 25,369.56 = 10,821.42 : x
  2. Step 2: Convert to fraction form
    18,377.52/25,369.56 = 10,821.42/x
  3. Step 3: Cross multiply
    18,377.52x = 25,369.56 × 10,821.42
  4. Step 4: Simplify right side
    18,377.52x = 274,534,663.98
  5. Step 5: Solve for x
    x = 274,534,663.98/18,377.52
  6. Step 6: Final answer
    x = 14,938.61

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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.