Home / 20,079.31-27,708.19-11,126.29

Finding the Fourth Proportional to 20,079.31, 27,708.19 and 11,126.29

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Solution

The fourth proportional to 20,079.31, 27,708.19 and 11,126.29 is: 15,353.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,079.31 : 27,708.19 = 11,126.29 : x
  2. Step 2: Convert to fraction form
    20,079.31/27,708.19 = 11,126.29/x
  3. Step 3: Cross multiply
    20,079.31x = 27,708.19 × 11,126.29
  4. Step 4: Simplify right side
    20,079.31x = 308,289,357.32
  5. Step 5: Solve for x
    x = 308,289,357.32/20,079.31
  6. Step 6: Final answer
    x = 15,353.58

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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.