Home / 10,638.87-15,959.18-3,243.39

Finding the Fourth Proportional to 10,638.87, 15,959.18 and 3,243.39

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Solution

The fourth proportional to 10,638.87, 15,959.18 and 3,243.39 is: 4,865.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,638.87 : 15,959.18 = 3,243.39 : x
  2. Step 2: Convert to fraction form
    10,638.87/15,959.18 = 3,243.39/x
  3. Step 3: Cross multiply
    10,638.87x = 15,959.18 × 3,243.39
  4. Step 4: Simplify right side
    10,638.87x = 51,761,844.82
  5. Step 5: Solve for x
    x = 51,761,844.82/10,638.87
  6. Step 6: Final answer
    x = 4,865.35

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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.