Home / 20,039.48-30,059.08-8,190.76

Finding the Fourth Proportional to 20,039.48, 30,059.08 and 8,190.76

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Solution

The fourth proportional to 20,039.48, 30,059.08 and 8,190.76 is: 12,286.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,039.48 : 30,059.08 = 8,190.76 : x
  2. Step 2: Convert to fraction form
    20,039.48/30,059.08 = 8,190.76/x
  3. Step 3: Cross multiply
    20,039.48x = 30,059.08 × 8,190.76
  4. Step 4: Simplify right side
    20,039.48x = 246,206,710.10
  5. Step 5: Solve for x
    x = 246,206,710.10/20,039.48
  6. Step 6: Final answer
    x = 12,286.08

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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.