Home / 22,103.88-30,517.13-15,387.05

Finding the Fourth Proportional to 22,103.88, 30,517.13 and 15,387.05

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Solution

The fourth proportional to 22,103.88, 30,517.13 and 15,387.05 is: 21,243.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,103.88 : 30,517.13 = 15,387.05 : x
  2. Step 2: Convert to fraction form
    22,103.88/30,517.13 = 15,387.05/x
  3. Step 3: Cross multiply
    22,103.88x = 30,517.13 × 15,387.05
  4. Step 4: Simplify right side
    22,103.88x = 469,568,605.17
  5. Step 5: Solve for x
    x = 469,568,605.17/22,103.88
  6. Step 6: Final answer
    x = 21,243.72

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Half scale
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Double scale
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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.