Home / 21,889.14-30,203.97-12,456.66

Finding the Fourth Proportional to 21,889.14, 30,203.97 and 12,456.66

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Solution

The fourth proportional to 21,889.14, 30,203.97 and 12,456.66 is: 17,188.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,889.14 : 30,203.97 = 12,456.66 : x
  2. Step 2: Convert to fraction form
    21,889.14/30,203.97 = 12,456.66/x
  3. Step 3: Cross multiply
    21,889.14x = 30,203.97 × 12,456.66
  4. Step 4: Simplify right side
    21,889.14x = 376,240,584.94
  5. Step 5: Solve for x
    x = 376,240,584.94/21,889.14
  6. Step 6: Final answer
    x = 17,188.46

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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.