Home / 18,788.90-28,186.60-6,310.13

Finding the Fourth Proportional to 18,788.90, 28,186.60 and 6,310.13

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Solution

The fourth proportional to 18,788.90, 28,186.60 and 6,310.13 is: 9,466.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,788.90 : 28,186.60 = 6,310.13 : x
  2. Step 2: Convert to fraction form
    18,788.90/28,186.60 = 6,310.13/x
  3. Step 3: Cross multiply
    18,788.90x = 28,186.60 × 6,310.13
  4. Step 4: Simplify right side
    18,788.90x = 177,861,110.26
  5. Step 5: Solve for x
    x = 177,861,110.26/18,788.90
  6. Step 6: Final answer
    x = 9,466.29

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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.