Home / 15,891.22-21,932.50-8,819.92

Finding the Fourth Proportional to 15,891.22, 21,932.50 and 8,819.92

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Solution

The fourth proportional to 15,891.22, 21,932.50 and 8,819.92 is: 12,172.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,891.22 : 21,932.50 = 8,819.92 : x
  2. Step 2: Convert to fraction form
    15,891.22/21,932.50 = 8,819.92/x
  3. Step 3: Cross multiply
    15,891.22x = 21,932.50 × 8,819.92
  4. Step 4: Simplify right side
    15,891.22x = 193,442,895.40
  5. Step 5: Solve for x
    x = 193,442,895.40/15,891.22
  6. Step 6: Final answer
    x = 12,172.94

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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.