Home / 20,101.26-27,741.40-11,151.65

Finding the Fourth Proportional to 20,101.26, 27,741.40 and 11,151.65

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Solution

The fourth proportional to 20,101.26, 27,741.40 and 11,151.65 is: 15,390.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,101.26 : 27,741.40 = 11,151.65 : x
  2. Step 2: Convert to fraction form
    20,101.26/27,741.40 = 11,151.65/x
  3. Step 3: Cross multiply
    20,101.26x = 27,741.40 × 11,151.65
  4. Step 4: Simplify right side
    20,101.26x = 309,362,383.31
  5. Step 5: Solve for x
    x = 309,362,383.31/20,101.26
  6. Step 6: Final answer
    x = 15,390.20

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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.