Home / 20,159.31-27,817.97-11,660.07

Finding the Fourth Proportional to 20,159.31, 27,817.97 and 11,660.07

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Solution

The fourth proportional to 20,159.31, 27,817.97 and 11,660.07 is: 16,089.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,159.31 : 27,817.97 = 11,660.07 : x
  2. Step 2: Convert to fraction form
    20,159.31/27,817.97 = 11,660.07/x
  3. Step 3: Cross multiply
    20,159.31x = 27,817.97 × 11,660.07
  4. Step 4: Simplify right side
    20,159.31x = 324,359,419.16
  5. Step 5: Solve for x
    x = 324,359,419.16/20,159.31
  6. Step 6: Final answer
    x = 16,089.81

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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.