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Finding the Fourth Proportional to 18,149.20, 25,045.25 and 10,191.76

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Solution

The fourth proportional to 18,149.20, 25,045.25 and 10,191.76 is: 14,064.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,149.20 : 25,045.25 = 10,191.76 : x
  2. Step 2: Convert to fraction form
    18,149.20/25,045.25 = 10,191.76/x
  3. Step 3: Cross multiply
    18,149.20x = 25,045.25 × 10,191.76
  4. Step 4: Simplify right side
    18,149.20x = 255,255,063.57
  5. Step 5: Solve for x
    x = 255,255,063.57/18,149.20
  6. Step 6: Final answer
    x = 14,064.26

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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.