Home / 20,539.26-28,343.91-11,589.66

Finding the Fourth Proportional to 20,539.26, 28,343.91 and 11,589.66

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Solution

The fourth proportional to 20,539.26, 28,343.91 and 11,589.66 is: 15,993.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,539.26 : 28,343.91 = 11,589.66 : x
  2. Step 2: Convert to fraction form
    20,539.26/28,343.91 = 11,589.66/x
  3. Step 3: Cross multiply
    20,539.26x = 28,343.91 × 11,589.66
  4. Step 4: Simplify right side
    20,539.26x = 328,496,279.97
  5. Step 5: Solve for x
    x = 328,496,279.97/20,539.26
  6. Step 6: Final answer
    x = 15,993.58

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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.