Home / 15,542.88-21,449.40-8,469.30

Finding the Fourth Proportional to 15,542.88, 21,449.40 and 8,469.30

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Solution

The fourth proportional to 15,542.88, 21,449.40 and 8,469.30 is: 11,687.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,542.88 : 21,449.40 = 8,469.30 : x
  2. Step 2: Convert to fraction form
    15,542.88/21,449.40 = 8,469.30/x
  3. Step 3: Cross multiply
    15,542.88x = 21,449.40 × 8,469.30
  4. Step 4: Simplify right side
    15,542.88x = 181,661,403.42
  5. Step 5: Solve for x
    x = 181,661,403.42/15,542.88
  6. Step 6: Final answer
    x = 11,687.76

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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.