Home / 20,206.80-27,886.24-11,254.30

Finding the Fourth Proportional to 20,206.80, 27,886.24 and 11,254.30

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Solution

The fourth proportional to 20,206.80, 27,886.24 and 11,254.30 is: 15,531.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,206.80 : 27,886.24 = 11,254.30 : x
  2. Step 2: Convert to fraction form
    20,206.80/27,886.24 = 11,254.30/x
  3. Step 3: Cross multiply
    20,206.80x = 27,886.24 × 11,254.30
  4. Step 4: Simplify right side
    20,206.80x = 313,840,138.97
  5. Step 5: Solve for x
    x = 313,840,138.97/20,206.80
  6. Step 6: Final answer
    x = 15,531.42

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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.