Home / 10,979.31-16,470.57-3,187.11

Finding the Fourth Proportional to 10,979.31, 16,470.57 and 3,187.11

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Solution

The fourth proportional to 10,979.31, 16,470.57 and 3,187.11 is: 4,781.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,979.31 : 16,470.57 = 3,187.11 : x
  2. Step 2: Convert to fraction form
    10,979.31/16,470.57 = 3,187.11/x
  3. Step 3: Cross multiply
    10,979.31x = 16,470.57 × 3,187.11
  4. Step 4: Simplify right side
    10,979.31x = 52,493,518.35
  5. Step 5: Solve for x
    x = 52,493,518.35/10,979.31
  6. Step 6: Final answer
    x = 4,781.13

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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.