Home / 15,757.52-21,745.31-8,683.92

Finding the Fourth Proportional to 15,757.52, 21,745.31 and 8,683.92

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Solution

The fourth proportional to 15,757.52, 21,745.31 and 8,683.92 is: 11,983.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,757.52 : 21,745.31 = 8,683.92 : x
  2. Step 2: Convert to fraction form
    15,757.52/21,745.31 = 8,683.92/x
  3. Step 3: Cross multiply
    15,757.52x = 21,745.31 × 8,683.92
  4. Step 4: Simplify right side
    15,757.52x = 188,834,570.54
  5. Step 5: Solve for x
    x = 188,834,570.54/15,757.52
  6. Step 6: Final answer
    x = 11,983.78

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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.