Home / 18,240.19-27,324.88-11,981.21

Finding the Fourth Proportional to 18,240.19, 27,324.88 and 11,981.21

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Solution

The fourth proportional to 18,240.19, 27,324.88 and 11,981.21 is: 17,948.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,240.19 : 27,324.88 = 11,981.21 : x
  2. Step 2: Convert to fraction form
    18,240.19/27,324.88 = 11,981.21/x
  3. Step 3: Cross multiply
    18,240.19x = 27,324.88 × 11,981.21
  4. Step 4: Simplify right side
    18,240.19x = 327,385,035.78
  5. Step 5: Solve for x
    x = 327,385,035.78/18,240.19
  6. Step 6: Final answer
    x = 17,948.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.