Home / 20,108.79-27,755.93-12,151.62

Finding the Fourth Proportional to 20,108.79, 27,755.93 and 12,151.62

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Solution

The fourth proportional to 20,108.79, 27,755.93 and 12,151.62 is: 16,772.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,108.79 : 27,755.93 = 12,151.62 : x
  2. Step 2: Convert to fraction form
    20,108.79/27,755.93 = 12,151.62/x
  3. Step 3: Cross multiply
    20,108.79x = 27,755.93 × 12,151.62
  4. Step 4: Simplify right side
    20,108.79x = 337,279,544.49
  5. Step 5: Solve for x
    x = 337,279,544.49/20,108.79
  6. Step 6: Final answer
    x = 16,772.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.