Home / 20,243.99-27,936.63-11,291.48

Finding the Fourth Proportional to 20,243.99, 27,936.63 and 11,291.48

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Solution

The fourth proportional to 20,243.99, 27,936.63 and 11,291.48 is: 15,582.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,243.99 : 27,936.63 = 11,291.48 : x
  2. Step 2: Convert to fraction form
    20,243.99/27,936.63 = 11,291.48/x
  3. Step 3: Cross multiply
    20,243.99x = 27,936.63 × 11,291.48
  4. Step 4: Simplify right side
    20,243.99x = 315,445,874.03
  5. Step 5: Solve for x
    x = 315,445,874.03/20,243.99
  6. Step 6: Final answer
    x = 15,582.20

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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.