Home / 20,175.38-27,842.70-11,101.10

Finding the Fourth Proportional to 20,175.38, 27,842.70 and 11,101.10

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Solution

The fourth proportional to 20,175.38, 27,842.70 and 11,101.10 is: 15,319.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,175.38 : 27,842.70 = 11,101.10 : x
  2. Step 2: Convert to fraction form
    20,175.38/27,842.70 = 11,101.10/x
  3. Step 3: Cross multiply
    20,175.38x = 27,842.70 × 11,101.10
  4. Step 4: Simplify right side
    20,175.38x = 309,084,596.97
  5. Step 5: Solve for x
    x = 309,084,596.97/20,175.38
  6. Step 6: Final answer
    x = 15,319.89

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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.