Home / 20,100.91-27,738.54-11,149.24

Finding the Fourth Proportional to 20,100.91, 27,738.54 and 11,149.24

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Solution

The fourth proportional to 20,100.91, 27,738.54 and 11,149.24 is: 15,385.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,100.91 : 27,738.54 = 11,149.24 : x
  2. Step 2: Convert to fraction form
    20,100.91/27,738.54 = 11,149.24/x
  3. Step 3: Cross multiply
    20,100.91x = 27,738.54 × 11,149.24
  4. Step 4: Simplify right side
    20,100.91x = 309,263,501.02
  5. Step 5: Solve for x
    x = 309,263,501.02/20,100.91
  6. Step 6: Final answer
    x = 15,385.55

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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.