Home / 20,696.16-28,560.56-11,264.72

Finding the Fourth Proportional to 20,696.16, 28,560.56 and 11,264.72

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Solution

The fourth proportional to 20,696.16, 28,560.56 and 11,264.72 is: 15,545.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,696.16 : 28,560.56 = 11,264.72 : x
  2. Step 2: Convert to fraction form
    20,696.16/28,560.56 = 11,264.72/x
  3. Step 3: Cross multiply
    20,696.16x = 28,560.56 × 11,264.72
  4. Step 4: Simplify right side
    20,696.16x = 321,726,726.52
  5. Step 5: Solve for x
    x = 321,726,726.52/20,696.16
  6. Step 6: Final answer
    x = 15,545.24

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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.