Home / 21,701.17-29,949.83-13,203.90

Finding the Fourth Proportional to 21,701.17, 29,949.83 and 13,203.90

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Solution

The fourth proportional to 21,701.17, 29,949.83 and 13,203.90 is: 18,222.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,701.17 : 29,949.83 = 13,203.90 : x
  2. Step 2: Convert to fraction form
    21,701.17/29,949.83 = 13,203.90/x
  3. Step 3: Cross multiply
    21,701.17x = 29,949.83 × 13,203.90
  4. Step 4: Simplify right side
    21,701.17x = 395,454,560.34
  5. Step 5: Solve for x
    x = 395,454,560.34/21,701.17
  6. Step 6: Final answer
    x = 18,222.73

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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.