Home / 21,897.92-30,216.11-12,336.21

Finding the Fourth Proportional to 21,897.92, 30,216.11 and 12,336.21

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Solution

The fourth proportional to 21,897.92, 30,216.11 and 12,336.21 is: 17,022.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,897.92 : 30,216.11 = 12,336.21 : x
  2. Step 2: Convert to fraction form
    21,897.92/30,216.11 = 12,336.21/x
  3. Step 3: Cross multiply
    21,897.92x = 30,216.11 × 12,336.21
  4. Step 4: Simplify right side
    21,897.92x = 372,752,216.66
  5. Step 5: Solve for x
    x = 372,752,216.66/21,897.92
  6. Step 6: Final answer
    x = 17,022.26

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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.