Home / 20,061.78-27,684.92-11,109.09

Finding the Fourth Proportional to 20,061.78, 27,684.92 and 11,109.09

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Solution

The fourth proportional to 20,061.78, 27,684.92 and 11,109.09 is: 15,330.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,061.78 : 27,684.92 = 11,109.09 : x
  2. Step 2: Convert to fraction form
    20,061.78/27,684.92 = 11,109.09/x
  3. Step 3: Cross multiply
    20,061.78x = 27,684.92 × 11,109.09
  4. Step 4: Simplify right side
    20,061.78x = 307,554,309.36
  5. Step 5: Solve for x
    x = 307,554,309.36/20,061.78
  6. Step 6: Final answer
    x = 15,330.36

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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.