Home / 18,882.20-28,433.07-13,986.56

Finding the Fourth Proportional to 18,882.20, 28,433.07 and 13,986.56

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Solution

The fourth proportional to 18,882.20, 28,433.07 and 13,986.56 is: 21,061.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,882.20 : 28,433.07 = 13,986.56 : x
  2. Step 2: Convert to fraction form
    18,882.20/28,433.07 = 13,986.56/x
  3. Step 3: Cross multiply
    18,882.20x = 28,433.07 × 13,986.56
  4. Step 4: Simplify right side
    18,882.20x = 397,680,839.54
  5. Step 5: Solve for x
    x = 397,680,839.54/18,882.20
  6. Step 6: Final answer
    x = 21,061.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.