Home / 21,921.47-32,863.74-8,766.66

Finding the Fourth Proportional to 21,921.47, 32,863.74 and 8,766.66

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Solution

The fourth proportional to 21,921.47, 32,863.74 and 8,766.66 is: 13,142.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,921.47 : 32,863.74 = 8,766.66 : x
  2. Step 2: Convert to fraction form
    21,921.47/32,863.74 = 8,766.66/x
  3. Step 3: Cross multiply
    21,921.47x = 32,863.74 × 8,766.66
  4. Step 4: Simplify right side
    21,921.47x = 288,105,234.91
  5. Step 5: Solve for x
    x = 288,105,234.91/21,921.47
  6. Step 6: Final answer
    x = 13,142.61

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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.