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Finding the Fourth Proportional to 18,454.68, 27,686.41 and 5,974.70

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Solution

The fourth proportional to 18,454.68, 27,686.41 and 5,974.70 is: 8,963.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,454.68 : 27,686.41 = 5,974.70 : x
  2. Step 2: Convert to fraction form
    18,454.68/27,686.41 = 5,974.70/x
  3. Step 3: Cross multiply
    18,454.68x = 27,686.41 × 5,974.70
  4. Step 4: Simplify right side
    18,454.68x = 165,418,048.11
  5. Step 5: Solve for x
    x = 165,418,048.11/18,454.68
  6. Step 6: Final answer
    x = 8,963.47

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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.