Home / 21,144.66-29,179.63-12,761.16

Finding the Fourth Proportional to 21,144.66, 29,179.63 and 12,761.16

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Solution

The fourth proportional to 21,144.66, 29,179.63 and 12,761.16 is: 17,610.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,144.66 : 29,179.63 = 12,761.16 : x
  2. Step 2: Convert to fraction form
    21,144.66/29,179.63 = 12,761.16/x
  3. Step 3: Cross multiply
    21,144.66x = 29,179.63 × 12,761.16
  4. Step 4: Simplify right side
    21,144.66x = 372,365,833.70
  5. Step 5: Solve for x
    x = 372,365,833.70/21,144.66
  6. Step 6: Final answer
    x = 17,610.40

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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.