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Finding the Fourth Proportional to 18,422.80, 27,633.98 and 11,029.32

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Solution

The fourth proportional to 18,422.80, 27,633.98 and 11,029.32 is: 16,543.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,422.80 : 27,633.98 = 11,029.32 : x
  2. Step 2: Convert to fraction form
    18,422.80/27,633.98 = 11,029.32/x
  3. Step 3: Cross multiply
    18,422.80x = 27,633.98 × 11,029.32
  4. Step 4: Simplify right side
    18,422.80x = 304,784,035.87
  5. Step 5: Solve for x
    x = 304,784,035.87/18,422.80
  6. Step 6: Final answer
    x = 16,543.85

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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.