Home / 18,883.12-28,339.28-13,324.56

Finding the Fourth Proportional to 18,883.12, 28,339.28 and 13,324.56

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Solution

The fourth proportional to 18,883.12, 28,339.28 and 13,324.56 is: 19,997.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,883.12 : 28,339.28 = 13,324.56 : x
  2. Step 2: Convert to fraction form
    18,883.12/28,339.28 = 13,324.56/x
  3. Step 3: Cross multiply
    18,883.12x = 28,339.28 × 13,324.56
  4. Step 4: Simplify right side
    18,883.12x = 377,608,436.72
  5. Step 5: Solve for x
    x = 377,608,436.72/18,883.12
  6. Step 6: Final answer
    x = 19,997.14

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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.