Home / 20,027.20-27,640.28-11,529.14

Finding the Fourth Proportional to 20,027.20, 27,640.28 and 11,529.14

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Solution

The fourth proportional to 20,027.20, 27,640.28 and 11,529.14 is: 15,911.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,027.20 : 27,640.28 = 11,529.14 : x
  2. Step 2: Convert to fraction form
    20,027.20/27,640.28 = 11,529.14/x
  3. Step 3: Cross multiply
    20,027.20x = 27,640.28 × 11,529.14
  4. Step 4: Simplify right side
    20,027.20x = 318,668,657.76
  5. Step 5: Solve for x
    x = 318,668,657.76/20,027.20
  6. Step 6: Final answer
    x = 15,911.79

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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.