Home / 20,223.39-27,910.37-12,159.69

Finding the Fourth Proportional to 20,223.39, 27,910.37 and 12,159.69

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Solution

The fourth proportional to 20,223.39, 27,910.37 and 12,159.69 is: 16,781.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,223.39 : 27,910.37 = 12,159.69 : x
  2. Step 2: Convert to fraction form
    20,223.39/27,910.37 = 12,159.69/x
  3. Step 3: Cross multiply
    20,223.39x = 27,910.37 × 12,159.69
  4. Step 4: Simplify right side
    20,223.39x = 339,381,446.99
  5. Step 5: Solve for x
    x = 339,381,446.99/20,223.39
  6. Step 6: Final answer
    x = 16,781.63

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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.