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Finding the Fourth Proportional to 18,380.30, 27,569.86 and 10,934.87

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Solution

The fourth proportional to 18,380.30, 27,569.86 and 10,934.87 is: 16,401.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,380.30 : 27,569.86 = 10,934.87 : x
  2. Step 2: Convert to fraction form
    18,380.30/27,569.86 = 10,934.87/x
  3. Step 3: Cross multiply
    18,380.30x = 27,569.86 × 10,934.87
  4. Step 4: Simplify right side
    18,380.30x = 301,472,669.83
  5. Step 5: Solve for x
    x = 301,472,669.83/18,380.30
  6. Step 6: Final answer
    x = 16,401.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.