Home / 29,218.70-40,321.82-15,789.95

Finding the Fourth Proportional to 29,218.70, 40,321.82 and 15,789.95

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Solution

The fourth proportional to 29,218.70, 40,321.82 and 15,789.95 is: 21,790.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,218.70 : 40,321.82 = 15,789.95 : x
  2. Step 2: Convert to fraction form
    29,218.70/40,321.82 = 15,789.95/x
  3. Step 3: Cross multiply
    29,218.70x = 40,321.82 × 15,789.95
  4. Step 4: Simplify right side
    29,218.70x = 636,679,661.99
  5. Step 5: Solve for x
    x = 636,679,661.99/29,218.70
  6. Step 6: Final answer
    x = 21,790.14

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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.