Home / 18,321.76-27,484.26-9,998.20

Finding the Fourth Proportional to 18,321.76, 27,484.26 and 9,998.20

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Solution

The fourth proportional to 18,321.76, 27,484.26 and 9,998.20 is: 14,998.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,321.76 : 27,484.26 = 9,998.20 : x
  2. Step 2: Convert to fraction form
    18,321.76/27,484.26 = 9,998.20/x
  3. Step 3: Cross multiply
    18,321.76x = 27,484.26 × 9,998.20
  4. Step 4: Simplify right side
    18,321.76x = 274,793,128.33
  5. Step 5: Solve for x
    x = 274,793,128.33/18,321.76
  6. Step 6: Final answer
    x = 14,998.18

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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.