Home / 20,159.13-27,819-11,661.06

Finding the Fourth Proportional to 20,159.13, 27,819 and 11,661.06

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Solution

The fourth proportional to 20,159.13, 27,819 and 11,661.06 is: 16,091.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,159.13 : 27,819 = 11,661.06 : x
  2. Step 2: Convert to fraction form
    20,159.13/27,819 = 11,661.06/x
  3. Step 3: Cross multiply
    20,159.13x = 27,819 × 11,661.06
  4. Step 4: Simplify right side
    20,159.13x = 324,399,028.14
  5. Step 5: Solve for x
    x = 324,399,028.14/20,159.13
  6. Step 6: Final answer
    x = 16,091.92

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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.