Home / 20,882.38-28,817.66-11,451.10

Finding the Fourth Proportional to 20,882.38, 28,817.66 and 11,451.10

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Solution

The fourth proportional to 20,882.38, 28,817.66 and 11,451.10 is: 15,802.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,882.38 : 28,817.66 = 11,451.10 : x
  2. Step 2: Convert to fraction form
    20,882.38/28,817.66 = 11,451.10/x
  3. Step 3: Cross multiply
    20,882.38x = 28,817.66 × 11,451.10
  4. Step 4: Simplify right side
    20,882.38x = 329,993,906.43
  5. Step 5: Solve for x
    x = 329,993,906.43/20,882.38
  6. Step 6: Final answer
    x = 15,802.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.