Home / 10,979.67-16,471.13-3,187.47

Finding the Fourth Proportional to 10,979.67, 16,471.13 and 3,187.47

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Solution

The fourth proportional to 10,979.67, 16,471.13 and 3,187.47 is: 4,781.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,979.67 : 16,471.13 = 3,187.47 : x
  2. Step 2: Convert to fraction form
    10,979.67/16,471.13 = 3,187.47/x
  3. Step 3: Cross multiply
    10,979.67x = 16,471.13 × 3,187.47
  4. Step 4: Simplify right side
    10,979.67x = 52,501,216.80
  5. Step 5: Solve for x
    x = 52,501,216.80/10,979.67
  6. Step 6: Final answer
    x = 4,781.68

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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.