Home / 18,677.45-28,020.29-5,530.85

Finding the Fourth Proportional to 18,677.45, 28,020.29 and 5,530.85

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Solution

The fourth proportional to 18,677.45, 28,020.29 and 5,530.85 is: 8,297.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,677.45 : 28,020.29 = 5,530.85 : x
  2. Step 2: Convert to fraction form
    18,677.45/28,020.29 = 5,530.85/x
  3. Step 3: Cross multiply
    18,677.45x = 28,020.29 × 5,530.85
  4. Step 4: Simplify right side
    18,677.45x = 154,976,063.34
  5. Step 5: Solve for x
    x = 154,976,063.34/18,677.45
  6. Step 6: Final answer
    x = 8,297.49

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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.