Home / 20,512.17-28,306.71-11,080.71

Finding the Fourth Proportional to 20,512.17, 28,306.71 and 11,080.71

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Solution

The fourth proportional to 20,512.17, 28,306.71 and 11,080.71 is: 15,291.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,512.17 : 28,306.71 = 11,080.71 : x
  2. Step 2: Convert to fraction form
    20,512.17/28,306.71 = 11,080.71/x
  3. Step 3: Cross multiply
    20,512.17x = 28,306.71 × 11,080.71
  4. Step 4: Simplify right side
    20,512.17x = 313,658,444.56
  5. Step 5: Solve for x
    x = 313,658,444.56/20,512.17
  6. Step 6: Final answer
    x = 15,291.33

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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.