Home / 21,179.46-31,773.81-8,031.96

Finding the Fourth Proportional to 21,179.46, 31,773.81 and 8,031.96

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Solution

The fourth proportional to 21,179.46, 31,773.81 and 8,031.96 is: 12,049.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,179.46 : 31,773.81 = 8,031.96 : x
  2. Step 2: Convert to fraction form
    21,179.46/31,773.81 = 8,031.96/x
  3. Step 3: Cross multiply
    21,179.46x = 31,773.81 × 8,031.96
  4. Step 4: Simplify right side
    21,179.46x = 255,205,970.97
  5. Step 5: Solve for x
    x = 255,205,970.97/21,179.46
  6. Step 6: Final answer
    x = 12,049.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.