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Finding the Fourth Proportional to 18,174.88, 25,081.50 and 11,101.30

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Solution

The fourth proportional to 18,174.88, 25,081.50 and 11,101.30 is: 15,319.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,174.88 : 25,081.50 = 11,101.30 : x
  2. Step 2: Convert to fraction form
    18,174.88/25,081.50 = 11,101.30/x
  3. Step 3: Cross multiply
    18,174.88x = 25,081.50 × 11,101.30
  4. Step 4: Simplify right side
    18,174.88x = 278,437,255.95
  5. Step 5: Solve for x
    x = 278,437,255.95/18,174.88
  6. Step 6: Final answer
    x = 15,319.90

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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.