Home / 20,118.74-27,765.59-11,167.97

Finding the Fourth Proportional to 20,118.74, 27,765.59 and 11,167.97

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Solution

The fourth proportional to 20,118.74, 27,765.59 and 11,167.97 is: 15,412.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,118.74 : 27,765.59 = 11,167.97 : x
  2. Step 2: Convert to fraction form
    20,118.74/27,765.59 = 11,167.97/x
  3. Step 3: Cross multiply
    20,118.74x = 27,765.59 × 11,167.97
  4. Step 4: Simplify right side
    20,118.74x = 310,085,081.48
  5. Step 5: Solve for x
    x = 310,085,081.48/20,118.74
  6. Step 6: Final answer
    x = 15,412.75

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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.