Home / 11,138.47-15,371.30-6,102.61

Finding the Fourth Proportional to 11,138.47, 15,371.30 and 6,102.61

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Solution

The fourth proportional to 11,138.47, 15,371.30 and 6,102.61 is: 8,421.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,138.47 : 15,371.30 = 6,102.61 : x
  2. Step 2: Convert to fraction form
    11,138.47/15,371.30 = 6,102.61/x
  3. Step 3: Cross multiply
    11,138.47x = 15,371.30 × 6,102.61
  4. Step 4: Simplify right side
    11,138.47x = 93,805,049.09
  5. Step 5: Solve for x
    x = 93,805,049.09/11,138.47
  6. Step 6: Final answer
    x = 8,421.72

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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.