Home / 20,341.85-30,512.79-13,327.70

Finding the Fourth Proportional to 20,341.85, 30,512.79 and 13,327.70

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Solution

The fourth proportional to 20,341.85, 30,512.79 and 13,327.70 is: 19,991.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,341.85 : 30,512.79 = 13,327.70 : x
  2. Step 2: Convert to fraction form
    20,341.85/30,512.79 = 13,327.70/x
  3. Step 3: Cross multiply
    20,341.85x = 30,512.79 × 13,327.70
  4. Step 4: Simplify right side
    20,341.85x = 406,665,158.72
  5. Step 5: Solve for x
    x = 406,665,158.72/20,341.85
  6. Step 6: Final answer
    x = 19,991.56

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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.