Home / 20,696.33-28,560.11-11,264.90

Finding the Fourth Proportional to 20,696.33, 28,560.11 and 11,264.90

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Solution

The fourth proportional to 20,696.33, 28,560.11 and 11,264.90 is: 15,545.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,696.33 : 28,560.11 = 11,264.90 : x
  2. Step 2: Convert to fraction form
    20,696.33/28,560.11 = 11,264.90/x
  3. Step 3: Cross multiply
    20,696.33x = 28,560.11 × 11,264.90
  4. Step 4: Simplify right side
    20,696.33x = 321,726,584.01
  5. Step 5: Solve for x
    x = 321,726,584.01/20,696.33
  6. Step 6: Final answer
    x = 15,545.11

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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.