Home / 20,159.72-27,819.88-11,776.20

Finding the Fourth Proportional to 20,159.72, 27,819.88 and 11,776.20

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Solution

The fourth proportional to 20,159.72, 27,819.88 and 11,776.20 is: 16,250.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,159.72 : 27,819.88 = 11,776.20 : x
  2. Step 2: Convert to fraction form
    20,159.72/27,819.88 = 11,776.20/x
  3. Step 3: Cross multiply
    20,159.72x = 27,819.88 × 11,776.20
  4. Step 4: Simplify right side
    20,159.72x = 327,612,470.86
  5. Step 5: Solve for x
    x = 327,612,470.86/20,159.72
  6. Step 6: Final answer
    x = 16,250.84

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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.