Home / 20,717.62-28,589.70-11,519.13

Finding the Fourth Proportional to 20,717.62, 28,589.70 and 11,519.13

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Solution

The fourth proportional to 20,717.62, 28,589.70 and 11,519.13 is: 15,896.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,717.62 : 28,589.70 = 11,519.13 : x
  2. Step 2: Convert to fraction form
    20,717.62/28,589.70 = 11,519.13/x
  3. Step 3: Cross multiply
    20,717.62x = 28,589.70 × 11,519.13
  4. Step 4: Simplify right side
    20,717.62x = 329,328,470.96
  5. Step 5: Solve for x
    x = 329,328,470.96/20,717.62
  6. Step 6: Final answer
    x = 15,896.06

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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.