Home / 18,938.38-28,411.67-7,251.59

Finding the Fourth Proportional to 18,938.38, 28,411.67 and 7,251.59

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Solution

The fourth proportional to 18,938.38, 28,411.67 and 7,251.59 is: 10,878.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,938.38 : 28,411.67 = 7,251.59 : x
  2. Step 2: Convert to fraction form
    18,938.38/28,411.67 = 7,251.59/x
  3. Step 3: Cross multiply
    18,938.38x = 28,411.67 × 7,251.59
  4. Step 4: Simplify right side
    18,938.38x = 206,029,782.06
  5. Step 5: Solve for x
    x = 206,029,782.06/18,938.38
  6. Step 6: Final answer
    x = 10,878.95

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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.