Home / 20,209.19-27,888.71-11,712.96

Finding the Fourth Proportional to 20,209.19, 27,888.71 and 11,712.96

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Solution

The fourth proportional to 20,209.19, 27,888.71 and 11,712.96 is: 16,163.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,209.19 : 27,888.71 = 11,712.96 : x
  2. Step 2: Convert to fraction form
    20,209.19/27,888.71 = 11,712.96/x
  3. Step 3: Cross multiply
    20,209.19x = 27,888.71 × 11,712.96
  4. Step 4: Simplify right side
    20,209.19x = 326,659,286.12
  5. Step 5: Solve for x
    x = 326,659,286.12/20,209.19
  6. Step 6: Final answer
    x = 16,163.90

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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.