Home / 21,983.10-30,335.97-12,551.66

Finding the Fourth Proportional to 21,983.10, 30,335.97 and 12,551.66

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Solution

The fourth proportional to 21,983.10, 30,335.97 and 12,551.66 is: 17,320.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,983.10 : 30,335.97 = 12,551.66 : x
  2. Step 2: Convert to fraction form
    21,983.10/30,335.97 = 12,551.66/x
  3. Step 3: Cross multiply
    21,983.10x = 30,335.97 × 12,551.66
  4. Step 4: Simplify right side
    21,983.10x = 380,766,629.53
  5. Step 5: Solve for x
    x = 380,766,629.53/21,983.10
  6. Step 6: Final answer
    x = 17,320.88

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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.