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Finding the Fourth Proportional to 18,290.88, 25,250.13 and 12,251.52

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Solution

The fourth proportional to 18,290.88, 25,250.13 and 12,251.52 is: 16,912.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,290.88 : 25,250.13 = 12,251.52 : x
  2. Step 2: Convert to fraction form
    18,290.88/25,250.13 = 12,251.52/x
  3. Step 3: Cross multiply
    18,290.88x = 25,250.13 × 12,251.52
  4. Step 4: Simplify right side
    18,290.88x = 309,352,472.70
  5. Step 5: Solve for x
    x = 309,352,472.70/18,290.88
  6. Step 6: Final answer
    x = 16,912.94

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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.