Home / 10,964.60-16,436.10-5,418.80

Finding the Fourth Proportional to 10,964.60, 16,436.10 and 5,418.80

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Solution

The fourth proportional to 10,964.60, 16,436.10 and 5,418.80 is: 8,122.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,964.60 : 16,436.10 = 5,418.80 : x
  2. Step 2: Convert to fraction form
    10,964.60/16,436.10 = 5,418.80/x
  3. Step 3: Cross multiply
    10,964.60x = 16,436.10 × 5,418.80
  4. Step 4: Simplify right side
    10,964.60x = 89,063,938.68
  5. Step 5: Solve for x
    x = 89,063,938.68/10,964.60
  6. Step 6: Final answer
    x = 8,122.86

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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.