Home / 39,234.94-54,144.20-21,329.90

Finding the Fourth Proportional to 39,234.94, 54,144.20 and 21,329.90

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Solution

The fourth proportional to 39,234.94, 54,144.20 and 21,329.90 is: 29,435.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,234.94 : 54,144.20 = 21,329.90 : x
  2. Step 2: Convert to fraction form
    39,234.94/54,144.20 = 21,329.90/x
  3. Step 3: Cross multiply
    39,234.94x = 54,144.20 × 21,329.90
  4. Step 4: Simplify right side
    39,234.94x = 1,154,890,371.58
  5. Step 5: Solve for x
    x = 1,154,890,371.58/39,234.94
  6. Step 6: Final answer
    x = 29,435.25

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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.