Home / 20,348.62-28,081.49-11,395.99

Finding the Fourth Proportional to 20,348.62, 28,081.49 and 11,395.99

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Solution

The fourth proportional to 20,348.62, 28,081.49 and 11,395.99 is: 15,726.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,348.62 : 28,081.49 = 11,395.99 : x
  2. Step 2: Convert to fraction form
    20,348.62/28,081.49 = 11,395.99/x
  3. Step 3: Cross multiply
    20,348.62x = 28,081.49 × 11,395.99
  4. Step 4: Simplify right side
    20,348.62x = 320,016,357.35
  5. Step 5: Solve for x
    x = 320,016,357.35/20,348.62
  6. Step 6: Final answer
    x = 15,726.69

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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.