Home / 20,882.22-28,816.95-11,321.58

Finding the Fourth Proportional to 20,882.22, 28,816.95 and 11,321.58

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Solution

The fourth proportional to 20,882.22, 28,816.95 and 11,321.58 is: 15,623.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,882.22 : 28,816.95 = 11,321.58 : x
  2. Step 2: Convert to fraction form
    20,882.22/28,816.95 = 11,321.58/x
  3. Step 3: Cross multiply
    20,882.22x = 28,816.95 × 11,321.58
  4. Step 4: Simplify right side
    20,882.22x = 326,253,404.78
  5. Step 5: Solve for x
    x = 326,253,404.78/20,882.22
  6. Step 6: Final answer
    x = 15,623.50

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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.