Home / 18,389.44-25,386.24-11,321.92

Finding the Fourth Proportional to 18,389.44, 25,386.24 and 11,321.92

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Solution

The fourth proportional to 18,389.44, 25,386.24 and 11,321.92 is: 15,629.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,389.44 : 25,386.24 = 11,321.92 : x
  2. Step 2: Convert to fraction form
    18,389.44/25,386.24 = 11,321.92/x
  3. Step 3: Cross multiply
    18,389.44x = 25,386.24 × 11,321.92
  4. Step 4: Simplify right side
    18,389.44x = 287,420,978.38
  5. Step 5: Solve for x
    x = 287,420,978.38/18,389.44
  6. Step 6: Final answer
    x = 15,629.68

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1.5x scale

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.