Home / 20,511.44-28,306.62-11,559.32

Finding the Fourth Proportional to 20,511.44, 28,306.62 and 11,559.32

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Solution

The fourth proportional to 20,511.44, 28,306.62 and 11,559.32 is: 15,952.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,511.44 : 28,306.62 = 11,559.32 : x
  2. Step 2: Convert to fraction form
    20,511.44/28,306.62 = 11,559.32/x
  3. Step 3: Cross multiply
    20,511.44x = 28,306.62 × 11,559.32
  4. Step 4: Simplify right side
    20,511.44x = 327,205,278.70
  5. Step 5: Solve for x
    x = 327,205,278.70/20,511.44
  6. Step 6: Final answer
    x = 15,952.33

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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.