Home / 20,207.11-27,886.67-11,254.61

Finding the Fourth Proportional to 20,207.11, 27,886.67 and 11,254.61

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Solution

The fourth proportional to 20,207.11, 27,886.67 and 11,254.61 is: 15,531.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,207.11 : 27,886.67 = 11,254.61 : x
  2. Step 2: Convert to fraction form
    20,207.11/27,886.67 = 11,254.61/x
  3. Step 3: Cross multiply
    20,207.11x = 27,886.67 × 11,254.61
  4. Step 4: Simplify right side
    20,207.11x = 313,853,706.97
  5. Step 5: Solve for x
    x = 313,853,706.97/20,207.11
  6. Step 6: Final answer
    x = 15,531.85

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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.