Home / 20,696.31-28,561.04-11,264.97

Finding the Fourth Proportional to 20,696.31, 28,561.04 and 11,264.97

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Solution

The fourth proportional to 20,696.31, 28,561.04 and 11,264.97 is: 15,545.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,696.31 : 28,561.04 = 11,264.97 : x
  2. Step 2: Convert to fraction form
    20,696.31/28,561.04 = 11,264.97/x
  3. Step 3: Cross multiply
    20,696.31x = 28,561.04 × 11,264.97
  4. Step 4: Simplify right side
    20,696.31x = 321,739,202.44
  5. Step 5: Solve for x
    x = 321,739,202.44/20,696.31
  6. Step 6: Final answer
    x = 15,545.73

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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.