Home / 20,104.20-30,156.30-8,999.10

Finding the Fourth Proportional to 20,104.20, 30,156.30 and 8,999.10

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Solution

The fourth proportional to 20,104.20, 30,156.30 and 8,999.10 is: 13,498.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,104.20 : 30,156.30 = 8,999.10 : x
  2. Step 2: Convert to fraction form
    20,104.20/30,156.30 = 8,999.10/x
  3. Step 3: Cross multiply
    20,104.20x = 30,156.30 × 8,999.10
  4. Step 4: Simplify right side
    20,104.20x = 271,379,559.33
  5. Step 5: Solve for x
    x = 271,379,559.33/20,104.20
  6. Step 6: Final answer
    x = 13,498.65

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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.