Home / 18,979.14-28,273.85-18,126.21

Finding the Fourth Proportional to 18,979.14, 28,273.85 and 18,126.21

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Solution

The fourth proportional to 18,979.14, 28,273.85 and 18,126.21 is: 27,003.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,979.14 : 28,273.85 = 18,126.21 : x
  2. Step 2: Convert to fraction form
    18,979.14/28,273.85 = 18,126.21/x
  3. Step 3: Cross multiply
    18,979.14x = 28,273.85 × 18,126.21
  4. Step 4: Simplify right side
    18,979.14x = 512,497,787.92
  5. Step 5: Solve for x
    x = 512,497,787.92/18,979.14
  6. Step 6: Final answer
    x = 27,003.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.