Home / 20,499.38-30,735.91-8,649.92

Finding the Fourth Proportional to 20,499.38, 30,735.91 and 8,649.92

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Solution

The fourth proportional to 20,499.38, 30,735.91 and 8,649.92 is: 12,969.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,499.38 : 30,735.91 = 8,649.92 : x
  2. Step 2: Convert to fraction form
    20,499.38/30,735.91 = 8,649.92/x
  3. Step 3: Cross multiply
    20,499.38x = 30,735.91 × 8,649.92
  4. Step 4: Simplify right side
    20,499.38x = 265,863,008.95
  5. Step 5: Solve for x
    x = 265,863,008.95/20,499.38
  6. Step 6: Final answer
    x = 12,969.32

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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.