Home / 13,421.49-20,132.24-3,561.18

Finding the Fourth Proportional to 13,421.49, 20,132.24 and 3,561.18

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Solution

The fourth proportional to 13,421.49, 20,132.24 and 3,561.18 is: 5,341.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,421.49 : 20,132.24 = 3,561.18 : x
  2. Step 2: Convert to fraction form
    13,421.49/20,132.24 = 3,561.18/x
  3. Step 3: Cross multiply
    13,421.49x = 20,132.24 × 3,561.18
  4. Step 4: Simplify right side
    13,421.49x = 71,694,530.44
  5. Step 5: Solve for x
    x = 71,694,530.44/13,421.49
  6. Step 6: Final answer
    x = 5,341.77

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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.