Home / 20,002.20-30,003.30-18,317.40

Finding the Fourth Proportional to 20,002.20, 30,003.30 and 18,317.40

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Solution

The fourth proportional to 20,002.20, 30,003.30 and 18,317.40 is: 27,476.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,002.20 : 30,003.30 = 18,317.40 : x
  2. Step 2: Convert to fraction form
    20,002.20/30,003.30 = 18,317.40/x
  3. Step 3: Cross multiply
    20,002.20x = 30,003.30 × 18,317.40
  4. Step 4: Simplify right side
    20,002.20x = 549,582,447.42
  5. Step 5: Solve for x
    x = 549,582,447.42/20,002.20
  6. Step 6: Final answer
    x = 27,476.10

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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.