Home / 15,542.80-21,449.31-8,469.22

Finding the Fourth Proportional to 15,542.80, 21,449.31 and 8,469.22

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Solution

The fourth proportional to 15,542.80, 21,449.31 and 8,469.22 is: 11,687.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,542.80 : 21,449.31 = 8,469.22 : x
  2. Step 2: Convert to fraction form
    15,542.80/21,449.31 = 8,469.22/x
  3. Step 3: Cross multiply
    15,542.80x = 21,449.31 × 8,469.22
  4. Step 4: Simplify right side
    15,542.80x = 181,658,925.24
  5. Step 5: Solve for x
    x = 181,658,925.24/15,542.80
  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.