Home / 20,743.32-28,625.90-11,311.68

Finding the Fourth Proportional to 20,743.32, 28,625.90 and 11,311.68

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Solution

The fourth proportional to 20,743.32, 28,625.90 and 11,311.68 is: 15,610.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,743.32 : 28,625.90 = 11,311.68 : x
  2. Step 2: Convert to fraction form
    20,743.32/28,625.90 = 11,311.68/x
  3. Step 3: Cross multiply
    20,743.32x = 28,625.90 × 11,311.68
  4. Step 4: Simplify right side
    20,743.32x = 323,806,963.95
  5. Step 5: Solve for x
    x = 323,806,963.95/20,743.32
  6. Step 6: Final answer
    x = 15,610.18

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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.