Home / 21,671.32-29,906.64-12,239.94

Finding the Fourth Proportional to 21,671.32, 29,906.64 and 12,239.94

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Solution

The fourth proportional to 21,671.32, 29,906.64 and 12,239.94 is: 16,891.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,671.32 : 29,906.64 = 12,239.94 : x
  2. Step 2: Convert to fraction form
    21,671.32/29,906.64 = 12,239.94/x
  3. Step 3: Cross multiply
    21,671.32x = 29,906.64 × 12,239.94
  4. Step 4: Simplify right side
    21,671.32x = 366,055,479.20
  5. Step 5: Solve for x
    x = 366,055,479.20/21,671.32
  6. Step 6: Final answer
    x = 16,891.24

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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.