Home / 20,512.90-28,306.02-11,559.57

Finding the Fourth Proportional to 20,512.90, 28,306.02 and 11,559.57

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Solution

The fourth proportional to 20,512.90, 28,306.02 and 11,559.57 is: 15,951.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,512.90 : 28,306.02 = 11,559.57 : x
  2. Step 2: Convert to fraction form
    20,512.90/28,306.02 = 11,559.57/x
  3. Step 3: Cross multiply
    20,512.90x = 28,306.02 × 11,559.57
  4. Step 4: Simplify right side
    20,512.90x = 327,205,419.61
  5. Step 5: Solve for x
    x = 327,205,419.61/20,512.90
  6. Step 6: Final answer
    x = 15,951.20

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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.