Home / 38,640.61-57,965.77-13,674.79

Finding the Fourth Proportional to 38,640.61, 57,965.77 and 13,674.79

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Solution

The fourth proportional to 38,640.61, 57,965.77 and 13,674.79 is: 20,513.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,640.61 : 57,965.77 = 13,674.79 : x
  2. Step 2: Convert to fraction form
    38,640.61/57,965.77 = 13,674.79/x
  3. Step 3: Cross multiply
    38,640.61x = 57,965.77 × 13,674.79
  4. Step 4: Simplify right side
    38,640.61x = 792,669,604.12
  5. Step 5: Solve for x
    x = 792,669,604.12/38,640.61
  6. Step 6: Final answer
    x = 20,513.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.