Home / 12,100.86-18,151.29-3,781.17

Finding the Fourth Proportional to 12,100.86, 18,151.29 and 3,781.17

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Solution

The fourth proportional to 12,100.86, 18,151.29 and 3,781.17 is: 5,671.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,100.86 : 18,151.29 = 3,781.17 : x
  2. Step 2: Convert to fraction form
    12,100.86/18,151.29 = 3,781.17/x
  3. Step 3: Cross multiply
    12,100.86x = 18,151.29 × 3,781.17
  4. Step 4: Simplify right side
    12,100.86x = 68,633,113.21
  5. Step 5: Solve for x
    x = 68,633,113.21/12,100.86
  6. Step 6: Final answer
    x = 5,671.76

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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.