Home / 15,032.97-20,745.36-8,318.79

Finding the Fourth Proportional to 15,032.97, 20,745.36 and 8,318.79

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Solution

The fourth proportional to 15,032.97, 20,745.36 and 8,318.79 is: 11,479.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,032.97 : 20,745.36 = 8,318.79 : x
  2. Step 2: Convert to fraction form
    15,032.97/20,745.36 = 8,318.79/x
  3. Step 3: Cross multiply
    15,032.97x = 20,745.36 × 8,318.79
  4. Step 4: Simplify right side
    15,032.97x = 172,576,293.31
  5. Step 5: Solve for x
    x = 172,576,293.31/15,032.97
  6. Step 6: Final answer
    x = 11,479.85

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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.