Home / 18,724.24-28,086.36-12,863.12

Finding the Fourth Proportional to 18,724.24, 28,086.36 and 12,863.12

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Solution

The fourth proportional to 18,724.24, 28,086.36 and 12,863.12 is: 19,294.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,724.24 : 28,086.36 = 12,863.12 : x
  2. Step 2: Convert to fraction form
    18,724.24/28,086.36 = 12,863.12/x
  3. Step 3: Cross multiply
    18,724.24x = 28,086.36 × 12,863.12
  4. Step 4: Simplify right side
    18,724.24x = 361,278,219.04
  5. Step 5: Solve for x
    x = 361,278,219.04/18,724.24
  6. Step 6: Final answer
    x = 19,294.68

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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.