Home / 20,867.92-28,797.56-11,436.28

Finding the Fourth Proportional to 20,867.92, 28,797.56 and 11,436.28

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Solution

The fourth proportional to 20,867.92, 28,797.56 and 11,436.28 is: 15,781.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,867.92 : 28,797.56 = 11,436.28 : x
  2. Step 2: Convert to fraction form
    20,867.92/28,797.56 = 11,436.28/x
  3. Step 3: Cross multiply
    20,867.92x = 28,797.56 × 11,436.28
  4. Step 4: Simplify right side
    20,867.92x = 329,336,959.48
  5. Step 5: Solve for x
    x = 329,336,959.48/20,867.92
  6. Step 6: Final answer
    x = 15,781.97

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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.