Home / 18,933.80-28,402.78-5,083.88

Finding the Fourth Proportional to 18,933.80, 28,402.78 and 5,083.88

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Solution

The fourth proportional to 18,933.80, 28,402.78 and 5,083.88 is: 7,626.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,933.80 : 28,402.78 = 5,083.88 : x
  2. Step 2: Convert to fraction form
    18,933.80/28,402.78 = 5,083.88/x
  3. Step 3: Cross multiply
    18,933.80x = 28,402.78 × 5,083.88
  4. Step 4: Simplify right side
    18,933.80x = 144,396,325.19
  5. Step 5: Solve for x
    x = 144,396,325.19/18,933.80
  6. Step 6: Final answer
    x = 7,626.38

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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.