Home / 18,139.38-27,217.44-8,281.68

Finding the Fourth Proportional to 18,139.38, 27,217.44 and 8,281.68

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Solution

The fourth proportional to 18,139.38, 27,217.44 and 8,281.68 is: 12,426.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,139.38 : 27,217.44 = 8,281.68 : x
  2. Step 2: Convert to fraction form
    18,139.38/27,217.44 = 8,281.68/x
  3. Step 3: Cross multiply
    18,139.38x = 27,217.44 × 8,281.68
  4. Step 4: Simplify right side
    18,139.38x = 225,406,128.50
  5. Step 5: Solve for x
    x = 225,406,128.50/18,139.38
  6. Step 6: Final answer
    x = 12,426.34

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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.