Home / 20,834.91-28,752.17-11,403.47

Finding the Fourth Proportional to 20,834.91, 28,752.17 and 11,403.47

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Solution

The fourth proportional to 20,834.91, 28,752.17 and 11,403.47 is: 15,736.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,834.91 : 28,752.17 = 11,403.47 : x
  2. Step 2: Convert to fraction form
    20,834.91/28,752.17 = 11,403.47/x
  3. Step 3: Cross multiply
    20,834.91x = 28,752.17 × 11,403.47
  4. Step 4: Simplify right side
    20,834.91x = 327,874,479.22
  5. Step 5: Solve for x
    x = 327,874,479.22/20,834.91
  6. Step 6: Final answer
    x = 15,736.79

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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.