Home / 20,696.91-28,560.97-11,265.27

Finding the Fourth Proportional to 20,696.91, 28,560.97 and 11,265.27

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Solution

The fourth proportional to 20,696.91, 28,560.97 and 11,265.27 is: 15,545.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,696.91 : 28,560.97 = 11,265.27 : x
  2. Step 2: Convert to fraction form
    20,696.91/28,560.97 = 11,265.27/x
  3. Step 3: Cross multiply
    20,696.91x = 28,560.97 × 11,265.27
  4. Step 4: Simplify right side
    20,696.91x = 321,747,038.51
  5. Step 5: Solve for x
    x = 321,747,038.51/20,696.91
  6. Step 6: Final answer
    x = 15,545.66

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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.