Home / 20,243.49-27,936.07-11,291.57

Finding the Fourth Proportional to 20,243.49, 27,936.07 and 11,291.57

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Solution

The fourth proportional to 20,243.49, 27,936.07 and 11,291.57 is: 15,582.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,243.49 : 27,936.07 = 11,291.57 : x
  2. Step 2: Convert to fraction form
    20,243.49/27,936.07 = 11,291.57/x
  3. Step 3: Cross multiply
    20,243.49x = 27,936.07 × 11,291.57
  4. Step 4: Simplify right side
    20,243.49x = 315,442,089.93
  5. Step 5: Solve for x
    x = 315,442,089.93/20,243.49
  6. Step 6: Final answer
    x = 15,582.40

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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.