Home / 17,638.10-26,435.55-7,766.90

Finding the Fourth Proportional to 17,638.10, 26,435.55 and 7,766.90

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Solution

The fourth proportional to 17,638.10, 26,435.55 and 7,766.90 is: 11,640.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,638.10 : 26,435.55 = 7,766.90 : x
  2. Step 2: Convert to fraction form
    17,638.10/26,435.55 = 7,766.90/x
  3. Step 3: Cross multiply
    17,638.10x = 26,435.55 × 7,766.90
  4. Step 4: Simplify right side
    17,638.10x = 205,322,273.30
  5. Step 5: Solve for x
    x = 205,322,273.30/17,638.10
  6. Step 6: Final answer
    x = 11,640.84

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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.