Home / 15,930.46-21,985.19-8,857.95

Finding the Fourth Proportional to 15,930.46, 21,985.19 and 8,857.95

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Solution

The fourth proportional to 15,930.46, 21,985.19 and 8,857.95 is: 12,224.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,930.46 : 21,985.19 = 8,857.95 : x
  2. Step 2: Convert to fraction form
    15,930.46/21,985.19 = 8,857.95/x
  3. Step 3: Cross multiply
    15,930.46x = 21,985.19 × 8,857.95
  4. Step 4: Simplify right side
    15,930.46x = 194,743,713.76
  5. Step 5: Solve for x
    x = 194,743,713.76/15,930.46
  6. Step 6: Final answer
    x = 12,224.61

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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.