Home / 20,119.26-27,767.85-11,169.63

Finding the Fourth Proportional to 20,119.26, 27,767.85 and 11,169.63

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Solution

The fourth proportional to 20,119.26, 27,767.85 and 11,169.63 is: 15,415.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,119.26 : 27,767.85 = 11,169.63 : x
  2. Step 2: Convert to fraction form
    20,119.26/27,767.85 = 11,169.63/x
  3. Step 3: Cross multiply
    20,119.26x = 27,767.85 × 11,169.63
  4. Step 4: Simplify right side
    20,119.26x = 310,156,610.40
  5. Step 5: Solve for x
    x = 310,156,610.40/20,119.26
  6. Step 6: Final answer
    x = 15,415.91

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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.