Home / 21,610.75-29,822.84-12,179.65

Finding the Fourth Proportional to 21,610.75, 29,822.84 and 12,179.65

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Solution

The fourth proportional to 21,610.75, 29,822.84 and 12,179.65 is: 16,807.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,610.75 : 29,822.84 = 12,179.65 : x
  2. Step 2: Convert to fraction form
    21,610.75/29,822.84 = 12,179.65/x
  3. Step 3: Cross multiply
    21,610.75x = 29,822.84 × 12,179.65
  4. Step 4: Simplify right side
    21,610.75x = 363,231,753.21
  5. Step 5: Solve for x
    x = 363,231,753.21/21,610.75
  6. Step 6: Final answer
    x = 16,807.92

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1.5x scale

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.