Home / 20,542.13-28,348.13-11,589.60

Finding the Fourth Proportional to 20,542.13, 28,348.13 and 11,589.60

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Solution

The fourth proportional to 20,542.13, 28,348.13 and 11,589.60 is: 15,993.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,542.13 : 28,348.13 = 11,589.60 : x
  2. Step 2: Convert to fraction form
    20,542.13/28,348.13 = 11,589.60/x
  3. Step 3: Cross multiply
    20,542.13x = 28,348.13 × 11,589.60
  4. Step 4: Simplify right side
    20,542.13x = 328,543,429.50
  5. Step 5: Solve for x
    x = 328,543,429.50/20,542.13
  6. Step 6: Final answer
    x = 15,993.64

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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.