Home / 21,889.80-30,230.82-17,208.36

Finding the Fourth Proportional to 21,889.80, 30,230.82 and 17,208.36

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Solution

The fourth proportional to 21,889.80, 30,230.82 and 17,208.36 is: 23,765.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,889.80 : 30,230.82 = 17,208.36 : x
  2. Step 2: Convert to fraction form
    21,889.80/30,230.82 = 17,208.36/x
  3. Step 3: Cross multiply
    21,889.80x = 30,230.82 × 17,208.36
  4. Step 4: Simplify right side
    21,889.80x = 520,222,833.66
  5. Step 5: Solve for x
    x = 520,222,833.66/21,889.80
  6. Step 6: Final answer
    x = 23,765.54

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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.