Home / 10,391.98-15,584.88-3,818.66

Finding the Fourth Proportional to 10,391.98, 15,584.88 and 3,818.66

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Solution

The fourth proportional to 10,391.98, 15,584.88 and 3,818.66 is: 5,726.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,391.98 : 15,584.88 = 3,818.66 : x
  2. Step 2: Convert to fraction form
    10,391.98/15,584.88 = 3,818.66/x
  3. Step 3: Cross multiply
    10,391.98x = 15,584.88 × 3,818.66
  4. Step 4: Simplify right side
    10,391.98x = 59,513,357.86
  5. Step 5: Solve for x
    x = 59,513,357.86/10,391.98
  6. Step 6: Final answer
    x = 5,726.85

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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.