Home / 18,872.38-28,298.85-7,021.27

Finding the Fourth Proportional to 18,872.38, 28,298.85 and 7,021.27

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Solution

The fourth proportional to 18,872.38, 28,298.85 and 7,021.27 is: 10,528.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,872.38 : 28,298.85 = 7,021.27 : x
  2. Step 2: Convert to fraction form
    18,872.38/28,298.85 = 7,021.27/x
  3. Step 3: Cross multiply
    18,872.38x = 28,298.85 × 7,021.27
  4. Step 4: Simplify right side
    18,872.38x = 198,693,866.54
  5. Step 5: Solve for x
    x = 198,693,866.54/18,872.38
  6. Step 6: Final answer
    x = 10,528.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.