Home / 20,834.92-28,752.78-11,403.28

Finding the Fourth Proportional to 20,834.92, 28,752.78 and 11,403.28

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Solution

The fourth proportional to 20,834.92, 28,752.78 and 11,403.28 is: 15,736.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,834.92 : 28,752.78 = 11,403.28 : x
  2. Step 2: Convert to fraction form
    20,834.92/28,752.78 = 11,403.28/x
  3. Step 3: Cross multiply
    20,834.92x = 28,752.78 × 11,403.28
  4. Step 4: Simplify right side
    20,834.92x = 327,876,001.12
  5. Step 5: Solve for x
    x = 327,876,001.12/20,834.92
  6. Step 6: Final answer
    x = 15,736.85

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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.