Home / 21,827.62-30,121.31-13,343.95

Finding the Fourth Proportional to 21,827.62, 30,121.31 and 13,343.95

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Solution

The fourth proportional to 21,827.62, 30,121.31 and 13,343.95 is: 18,414.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,827.62 : 30,121.31 = 13,343.95 : x
  2. Step 2: Convert to fraction form
    21,827.62/30,121.31 = 13,343.95/x
  3. Step 3: Cross multiply
    21,827.62x = 30,121.31 × 13,343.95
  4. Step 4: Simplify right side
    21,827.62x = 401,937,254.57
  5. Step 5: Solve for x
    x = 401,937,254.57/21,827.62
  6. Step 6: Final answer
    x = 18,414.16

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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.