Home / 20,104.69-27,744.49-11,722.81

Finding the Fourth Proportional to 20,104.69, 27,744.49 and 11,722.81

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Solution

The fourth proportional to 20,104.69, 27,744.49 and 11,722.81 is: 16,177.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,104.69 : 27,744.49 = 11,722.81 : x
  2. Step 2: Convert to fraction form
    20,104.69/27,744.49 = 11,722.81/x
  3. Step 3: Cross multiply
    20,104.69x = 27,744.49 × 11,722.81
  4. Step 4: Simplify right side
    20,104.69x = 325,243,330.11
  5. Step 5: Solve for x
    x = 325,243,330.11/20,104.69
  6. Step 6: Final answer
    x = 16,177.49

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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.