Home / 15,521.75-21,407.45-9,542.73

Finding the Fourth Proportional to 15,521.75, 21,407.45 and 9,542.73

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Solution

The fourth proportional to 15,521.75, 21,407.45 and 9,542.73 is: 13,161.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,521.75 : 21,407.45 = 9,542.73 : x
  2. Step 2: Convert to fraction form
    15,521.75/21,407.45 = 9,542.73/x
  3. Step 3: Cross multiply
    15,521.75x = 21,407.45 × 9,542.73
  4. Step 4: Simplify right side
    15,521.75x = 204,285,467.62
  5. Step 5: Solve for x
    x = 204,285,467.62/15,521.75
  6. Step 6: Final answer
    x = 13,161.24

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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.