Home / 20,728.03-28,614.29-12,227.29

Finding the Fourth Proportional to 20,728.03, 28,614.29 and 12,227.29

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Solution

The fourth proportional to 20,728.03, 28,614.29 and 12,227.29 is: 16,879.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,728.03 : 28,614.29 = 12,227.29 : x
  2. Step 2: Convert to fraction form
    20,728.03/28,614.29 = 12,227.29/x
  3. Step 3: Cross multiply
    20,728.03x = 28,614.29 × 12,227.29
  4. Step 4: Simplify right side
    20,728.03x = 349,875,221.97
  5. Step 5: Solve for x
    x = 349,875,221.97/20,728.03
  6. Step 6: Final answer
    x = 16,879.33

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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.