Home / 21,640.88-29,864.41-12,209.24

Finding the Fourth Proportional to 21,640.88, 29,864.41 and 12,209.24

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Solution

The fourth proportional to 21,640.88, 29,864.41 and 12,209.24 is: 16,848.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,640.88 : 29,864.41 = 12,209.24 : x
  2. Step 2: Convert to fraction form
    21,640.88/29,864.41 = 12,209.24/x
  3. Step 3: Cross multiply
    21,640.88x = 29,864.41 × 12,209.24
  4. Step 4: Simplify right side
    21,640.88x = 364,621,569.30
  5. Step 5: Solve for x
    x = 364,621,569.30/21,640.88
  6. Step 6: Final answer
    x = 16,848.74

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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.