Home / 11,078.66-15,290.52-6,605

Finding the Fourth Proportional to 11,078.66, 15,290.52 and 6,605

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Solution

The fourth proportional to 11,078.66, 15,290.52 and 6,605 is: 9,116.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,078.66 : 15,290.52 = 6,605 : x
  2. Step 2: Convert to fraction form
    11,078.66/15,290.52 = 6,605/x
  3. Step 3: Cross multiply
    11,078.66x = 15,290.52 × 6,605
  4. Step 4: Simplify right side
    11,078.66x = 100,993,884.60
  5. Step 5: Solve for x
    x = 100,993,884.60/11,078.66
  6. Step 6: Final answer
    x = 9,116.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.