Home / 21,734.05-30,007.39-16,689.21

Finding the Fourth Proportional to 21,734.05, 30,007.39 and 16,689.21

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Solution

The fourth proportional to 21,734.05, 30,007.39 and 16,689.21 is: 23,042.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,734.05 : 30,007.39 = 16,689.21 : x
  2. Step 2: Convert to fraction form
    21,734.05/30,007.39 = 16,689.21/x
  3. Step 3: Cross multiply
    21,734.05x = 30,007.39 × 16,689.21
  4. Step 4: Simplify right side
    21,734.05x = 500,799,716.55
  5. Step 5: Solve for x
    x = 500,799,716.55/21,734.05
  6. Step 6: Final answer
    x = 23,042.18

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1.5x scale

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.