Home / 18,869.98-28,308.39-7,770.62

Finding the Fourth Proportional to 18,869.98, 28,308.39 and 7,770.62

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Solution

The fourth proportional to 18,869.98, 28,308.39 and 7,770.62 is: 11,657.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,869.98 : 28,308.39 = 7,770.62 : x
  2. Step 2: Convert to fraction form
    18,869.98/28,308.39 = 7,770.62/x
  3. Step 3: Cross multiply
    18,869.98x = 28,308.39 × 7,770.62
  4. Step 4: Simplify right side
    18,869.98x = 219,973,623.90
  5. Step 5: Solve for x
    x = 219,973,623.90/18,869.98
  6. Step 6: Final answer
    x = 11,657.33

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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.