Home / 18,989.80-28,487.40-5,843.24

Finding the Fourth Proportional to 18,989.80, 28,487.40 and 5,843.24

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Solution

The fourth proportional to 18,989.80, 28,487.40 and 5,843.24 is: 8,765.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,989.80 : 28,487.40 = 5,843.24 : x
  2. Step 2: Convert to fraction form
    18,989.80/28,487.40 = 5,843.24/x
  3. Step 3: Cross multiply
    18,989.80x = 28,487.40 × 5,843.24
  4. Step 4: Simplify right side
    18,989.80x = 166,458,715.18
  5. Step 5: Solve for x
    x = 166,458,715.18/18,989.80
  6. Step 6: Final answer
    x = 8,765.69

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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.