Home / 10,889.28-16,333.92-4,651.20

Finding the Fourth Proportional to 10,889.28, 16,333.92 and 4,651.20

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Solution

The fourth proportional to 10,889.28, 16,333.92 and 4,651.20 is: 6,976.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,889.28 : 16,333.92 = 4,651.20 : x
  2. Step 2: Convert to fraction form
    10,889.28/16,333.92 = 4,651.20/x
  3. Step 3: Cross multiply
    10,889.28x = 16,333.92 × 4,651.20
  4. Step 4: Simplify right side
    10,889.28x = 75,972,328.70
  5. Step 5: Solve for x
    x = 75,972,328.70/10,889.28
  6. Step 6: Final answer
    x = 6,976.80

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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.