Home / 20,326.74-30,490.10-13,399.62

Finding the Fourth Proportional to 20,326.74, 30,490.10 and 13,399.62

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Solution

The fourth proportional to 20,326.74, 30,490.10 and 13,399.62 is: 20,099.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,326.74 : 30,490.10 = 13,399.62 : x
  2. Step 2: Convert to fraction form
    20,326.74/30,490.10 = 13,399.62/x
  3. Step 3: Cross multiply
    20,326.74x = 30,490.10 × 13,399.62
  4. Step 4: Simplify right side
    20,326.74x = 408,555,753.76
  5. Step 5: Solve for x
    x = 408,555,753.76/20,326.74
  6. Step 6: Final answer
    x = 20,099.42

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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.