Home / 20,696.55-28,561.19-11,265.09

Finding the Fourth Proportional to 20,696.55, 28,561.19 and 11,265.09

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Solution

The fourth proportional to 20,696.55, 28,561.19 and 11,265.09 is: 15,545.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,696.55 : 28,561.19 = 11,265.09 : x
  2. Step 2: Convert to fraction form
    20,696.55/28,561.19 = 11,265.09/x
  3. Step 3: Cross multiply
    20,696.55x = 28,561.19 × 11,265.09
  4. Step 4: Simplify right side
    20,696.55x = 321,744,375.86
  5. Step 5: Solve for x
    x = 321,744,375.86/20,696.55
  6. Step 6: Final answer
    x = 15,545.80

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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.