Home / 20,115.95-27,761.33-11,164.23

Finding the Fourth Proportional to 20,115.95, 27,761.33 and 11,164.23

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Solution

The fourth proportional to 20,115.95, 27,761.33 and 11,164.23 is: 15,407.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,115.95 : 27,761.33 = 11,164.23 : x
  2. Step 2: Convert to fraction form
    20,115.95/27,761.33 = 11,164.23/x
  3. Step 3: Cross multiply
    20,115.95x = 27,761.33 × 11,164.23
  4. Step 4: Simplify right side
    20,115.95x = 309,933,901.14
  5. Step 5: Solve for x
    x = 309,933,901.14/20,115.95
  6. Step 6: Final answer
    x = 15,407.37

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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.