Home / 20,192.37-30,257.07-12,781.17

Finding the Fourth Proportional to 20,192.37, 30,257.07 and 12,781.17

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Solution

The fourth proportional to 20,192.37, 30,257.07 and 12,781.17 is: 19,151.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,192.37 : 30,257.07 = 12,781.17 : x
  2. Step 2: Convert to fraction form
    20,192.37/30,257.07 = 12,781.17/x
  3. Step 3: Cross multiply
    20,192.37x = 30,257.07 × 12,781.17
  4. Step 4: Simplify right side
    20,192.37x = 386,720,755.37
  5. Step 5: Solve for x
    x = 386,720,755.37/20,192.37
  6. Step 6: Final answer
    x = 19,151.83

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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.