Home / 27,993.78-38,631.42-15,418.53

Finding the Fourth Proportional to 27,993.78, 38,631.42 and 15,418.53

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Solution

The fourth proportional to 27,993.78, 38,631.42 and 15,418.53 is: 21,277.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,993.78 : 38,631.42 = 15,418.53 : x
  2. Step 2: Convert to fraction form
    27,993.78/38,631.42 = 15,418.53/x
  3. Step 3: Cross multiply
    27,993.78x = 38,631.42 × 15,418.53
  4. Step 4: Simplify right side
    27,993.78x = 595,639,708.21
  5. Step 5: Solve for x
    x = 595,639,708.21/27,993.78
  6. Step 6: Final answer
    x = 21,277.57

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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.