Home / 21,686.76-29,922.66-12,254.04

Finding the Fourth Proportional to 21,686.76, 29,922.66 and 12,254.04

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Solution

The fourth proportional to 21,686.76, 29,922.66 and 12,254.04 is: 16,907.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,686.76 : 29,922.66 = 12,254.04 : x
  2. Step 2: Convert to fraction form
    21,686.76/29,922.66 = 12,254.04/x
  3. Step 3: Cross multiply
    21,686.76x = 29,922.66 × 12,254.04
  4. Step 4: Simplify right side
    21,686.76x = 366,673,472.55
  5. Step 5: Solve for x
    x = 366,673,472.55/21,686.76
  6. Step 6: Final answer
    x = 16,907.71

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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.