Home / 20,512.17-28,306.60-11,562.55

Finding the Fourth Proportional to 20,512.17, 28,306.60 and 11,562.55

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Solution

The fourth proportional to 20,512.17, 28,306.60 and 11,562.55 is: 15,956.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,512.17 : 28,306.60 = 11,562.55 : x
  2. Step 2: Convert to fraction form
    20,512.17/28,306.60 = 11,562.55/x
  3. Step 3: Cross multiply
    20,512.17x = 28,306.60 × 11,562.55
  4. Step 4: Simplify right side
    20,512.17x = 327,296,378.16
  5. Step 5: Solve for x
    x = 327,296,378.16/20,512.17
  6. Step 6: Final answer
    x = 15,956.20

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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.