Home / 18,291.30-27,436.95-8,427.66

Finding the Fourth Proportional to 18,291.30, 27,436.95 and 8,427.66

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Solution

The fourth proportional to 18,291.30, 27,436.95 and 8,427.66 is: 12,641.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,291.30 : 27,436.95 = 8,427.66 : x
  2. Step 2: Convert to fraction form
    18,291.30/27,436.95 = 8,427.66/x
  3. Step 3: Cross multiply
    18,291.30x = 27,436.95 × 8,427.66
  4. Step 4: Simplify right side
    18,291.30x = 231,229,286.04
  5. Step 5: Solve for x
    x = 231,229,286.04/18,291.30
  6. Step 6: Final answer
    x = 12,641.49

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Similar ratio
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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.