Home / 10,143.31-15,215.06-2,747.85

Finding the Fourth Proportional to 10,143.31, 15,215.06 and 2,747.85

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Solution

The fourth proportional to 10,143.31, 15,215.06 and 2,747.85 is: 4,121.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,143.31 : 15,215.06 = 2,747.85 : x
  2. Step 2: Convert to fraction form
    10,143.31/15,215.06 = 2,747.85/x
  3. Step 3: Cross multiply
    10,143.31x = 15,215.06 × 2,747.85
  4. Step 4: Simplify right side
    10,143.31x = 41,808,702.62
  5. Step 5: Solve for x
    x = 41,808,702.62/10,143.31
  6. Step 6: Final answer
    x = 4,121.80

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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.