Home / 11,143.50-15,378.60-6,363.90

Finding the Fourth Proportional to 11,143.50, 15,378.60 and 6,363.90

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Solution

The fourth proportional to 11,143.50, 15,378.60 and 6,363.90 is: 8,782.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,143.50 : 15,378.60 = 6,363.90 : x
  2. Step 2: Convert to fraction form
    11,143.50/15,378.60 = 6,363.90/x
  3. Step 3: Cross multiply
    11,143.50x = 15,378.60 × 6,363.90
  4. Step 4: Simplify right side
    11,143.50x = 97,867,872.54
  5. Step 5: Solve for x
    x = 97,867,872.54/11,143.50
  6. Step 6: Final answer
    x = 8,782.51

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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.