Home / 21,949.29-30,286.85-12,997.17

Finding the Fourth Proportional to 21,949.29, 30,286.85 and 12,997.17

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Solution

The fourth proportional to 21,949.29, 30,286.85 and 12,997.17 is: 17,934.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,949.29 : 30,286.85 = 12,997.17 : x
  2. Step 2: Convert to fraction form
    21,949.29/30,286.85 = 12,997.17/x
  3. Step 3: Cross multiply
    21,949.29x = 30,286.85 × 12,997.17
  4. Step 4: Simplify right side
    21,949.29x = 393,643,273.23
  5. Step 5: Solve for x
    x = 393,643,273.23/21,949.29
  6. Step 6: Final answer
    x = 17,934.21

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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.