Home / 15,032.57-20,745.09-8,318.43

Finding the Fourth Proportional to 15,032.57, 20,745.09 and 8,318.43

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Solution

The fourth proportional to 15,032.57, 20,745.09 and 8,318.43 is: 11,479.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,032.57 : 20,745.09 = 8,318.43 : x
  2. Step 2: Convert to fraction form
    15,032.57/20,745.09 = 8,318.43/x
  3. Step 3: Cross multiply
    15,032.57x = 20,745.09 × 8,318.43
  4. Step 4: Simplify right side
    15,032.57x = 172,566,579.01
  5. Step 5: Solve for x
    x = 172,566,579.01/15,032.57
  6. Step 6: Final answer
    x = 11,479.52

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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.