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Finding the Fourth Proportional to 18,373.66, 25,345.11 and 11,647.90

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Solution

The fourth proportional to 18,373.66, 25,345.11 and 11,647.90 is: 16,067.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,373.66 : 25,345.11 = 11,647.90 : x
  2. Step 2: Convert to fraction form
    18,373.66/25,345.11 = 11,647.90/x
  3. Step 3: Cross multiply
    18,373.66x = 25,345.11 × 11,647.90
  4. Step 4: Simplify right side
    18,373.66x = 295,217,306.77
  5. Step 5: Solve for x
    x = 295,217,306.77/18,373.66
  6. Step 6: Final answer
    x = 16,067.42

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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.