Home / 20,120.19-27,764.55-11,167.26

Finding the Fourth Proportional to 20,120.19, 27,764.55 and 11,167.26

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Solution

The fourth proportional to 20,120.19, 27,764.55 and 11,167.26 is: 15,410.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,120.19 : 27,764.55 = 11,167.26 : x
  2. Step 2: Convert to fraction form
    20,120.19/27,764.55 = 11,167.26/x
  3. Step 3: Cross multiply
    20,120.19x = 27,764.55 × 11,167.26
  4. Step 4: Simplify right side
    20,120.19x = 310,053,948.63
  5. Step 5: Solve for x
    x = 310,053,948.63/20,120.19
  6. Step 6: Final answer
    x = 15,410.09

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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.