Home / 21,040.82-29,037.75-12,091.89

Finding the Fourth Proportional to 21,040.82, 29,037.75 and 12,091.89

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Solution

The fourth proportional to 21,040.82, 29,037.75 and 12,091.89 is: 16,687.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,040.82 : 29,037.75 = 12,091.89 : x
  2. Step 2: Convert to fraction form
    21,040.82/29,037.75 = 12,091.89/x
  3. Step 3: Cross multiply
    21,040.82x = 29,037.75 × 12,091.89
  4. Step 4: Simplify right side
    21,040.82x = 351,121,133.66
  5. Step 5: Solve for x
    x = 351,121,133.66/21,040.82
  6. Step 6: Final answer
    x = 16,687.62

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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.