Home / 21,838.43-30,135.33-13,344.68

Finding the Fourth Proportional to 21,838.43, 30,135.33 and 13,344.68

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Solution

The fourth proportional to 21,838.43, 30,135.33 and 13,344.68 is: 18,414.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,838.43 : 30,135.33 = 13,344.68 : x
  2. Step 2: Convert to fraction form
    21,838.43/30,135.33 = 13,344.68/x
  3. Step 3: Cross multiply
    21,838.43x = 30,135.33 × 13,344.68
  4. Step 4: Simplify right side
    21,838.43x = 402,146,410.88
  5. Step 5: Solve for x
    x = 402,146,410.88/21,838.43
  6. Step 6: Final answer
    x = 18,414.62

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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.