Home / 20,175.80-27,842.49-11,222.78

Finding the Fourth Proportional to 20,175.80, 27,842.49 and 11,222.78

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Solution

The fourth proportional to 20,175.80, 27,842.49 and 11,222.78 is: 15,487.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,175.80 : 27,842.49 = 11,222.78 : x
  2. Step 2: Convert to fraction form
    20,175.80/27,842.49 = 11,222.78/x
  3. Step 3: Cross multiply
    20,175.80x = 27,842.49 × 11,222.78
  4. Step 4: Simplify right side
    20,175.80x = 312,470,000.71
  5. Step 5: Solve for x
    x = 312,470,000.71/20,175.80
  6. Step 6: Final answer
    x = 15,487.37

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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.