Home / 15,947.67-23,921.47-5,418.78

Finding the Fourth Proportional to 15,947.67, 23,921.47 and 5,418.78

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Solution

The fourth proportional to 15,947.67, 23,921.47 and 5,418.78 is: 8,128.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,947.67 : 23,921.47 = 5,418.78 : x
  2. Step 2: Convert to fraction form
    15,947.67/23,921.47 = 5,418.78/x
  3. Step 3: Cross multiply
    15,947.67x = 23,921.47 × 5,418.78
  4. Step 4: Simplify right side
    15,947.67x = 129,625,183.21
  5. Step 5: Solve for x
    x = 129,625,183.21/15,947.67
  6. Step 6: Final answer
    x = 8,128.16

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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.