Home / 15,542.90-21,449.20-8,469.32

Finding the Fourth Proportional to 15,542.90, 21,449.20 and 8,469.32

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Solution

The fourth proportional to 15,542.90, 21,449.20 and 8,469.32 is: 11,687.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,542.90 : 21,449.20 = 8,469.32 : x
  2. Step 2: Convert to fraction form
    15,542.90/21,449.20 = 8,469.32/x
  3. Step 3: Cross multiply
    15,542.90x = 21,449.20 × 8,469.32
  4. Step 4: Simplify right side
    15,542.90x = 181,660,138.54
  5. Step 5: Solve for x
    x = 181,660,138.54/15,542.90
  6. Step 6: Final answer
    x = 11,687.66

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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.