Home / 20,321.55-30,482.13-5,530.23

Finding the Fourth Proportional to 20,321.55, 30,482.13 and 5,530.23

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Solution

The fourth proportional to 20,321.55, 30,482.13 and 5,530.23 is: 8,295.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,321.55 : 30,482.13 = 5,530.23 : x
  2. Step 2: Convert to fraction form
    20,321.55/30,482.13 = 5,530.23/x
  3. Step 3: Cross multiply
    20,321.55x = 30,482.13 × 5,530.23
  4. Step 4: Simplify right side
    20,321.55x = 168,573,189.79
  5. Step 5: Solve for x
    x = 168,573,189.79/20,321.55
  6. Step 6: Final answer
    x = 8,295.29

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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.