Home / 18,234.30-27,351.45-12,359.10

Finding the Fourth Proportional to 18,234.30, 27,351.45 and 12,359.10

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Solution

The fourth proportional to 18,234.30, 27,351.45 and 12,359.10 is: 18,538.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,234.30 : 27,351.45 = 12,359.10 : x
  2. Step 2: Convert to fraction form
    18,234.30/27,351.45 = 12,359.10/x
  3. Step 3: Cross multiply
    18,234.30x = 27,351.45 × 12,359.10
  4. Step 4: Simplify right side
    18,234.30x = 338,039,305.70
  5. Step 5: Solve for x
    x = 338,039,305.70/18,234.30
  6. Step 6: Final answer
    x = 18,538.65

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Half scale
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Double scale
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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.