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Finding the Fourth Proportional to 20,499.92, 30,749.88 and 6,649.04

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Solution

The fourth proportional to 20,499.92, 30,749.88 and 6,649.04 is: 9,973.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,499.92 : 30,749.88 = 6,649.04 : x
  2. Step 2: Convert to fraction form
    20,499.92/30,749.88 = 6,649.04/x
  3. Step 3: Cross multiply
    20,499.92x = 30,749.88 × 6,649.04
  4. Step 4: Simplify right side
    20,499.92x = 204,457,182.12
  5. Step 5: Solve for x
    x = 204,457,182.12/20,499.92
  6. Step 6: Final answer
    x = 9,973.56

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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.