Home / 20,105.34-27,749.31-11,612.95

Finding the Fourth Proportional to 20,105.34, 27,749.31 and 11,612.95

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Solution

The fourth proportional to 20,105.34, 27,749.31 and 11,612.95 is: 16,028.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,105.34 : 27,749.31 = 11,612.95 : x
  2. Step 2: Convert to fraction form
    20,105.34/27,749.31 = 11,612.95/x
  3. Step 3: Cross multiply
    20,105.34x = 27,749.31 × 11,612.95
  4. Step 4: Simplify right side
    20,105.34x = 322,251,236.64
  5. Step 5: Solve for x
    x = 322,251,236.64/20,105.34
  6. Step 6: Final answer
    x = 16,028.14

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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.