Home / 10,781.66-16,161.53-8,179.13

Finding the Fourth Proportional to 10,781.66, 16,161.53 and 8,179.13

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Solution

The fourth proportional to 10,781.66, 16,161.53 and 8,179.13 is: 12,260.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,781.66 : 16,161.53 = 8,179.13 : x
  2. Step 2: Convert to fraction form
    10,781.66/16,161.53 = 8,179.13/x
  3. Step 3: Cross multiply
    10,781.66x = 16,161.53 × 8,179.13
  4. Step 4: Simplify right side
    10,781.66x = 132,187,133.17
  5. Step 5: Solve for x
    x = 132,187,133.17/10,781.66
  6. Step 6: Final answer
    x = 12,260.37

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1.5x scale

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.