Home / 11,187.90-16,761.60-8,863.20

Finding the Fourth Proportional to 11,187.90, 16,761.60 and 8,863.20

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Solution

The fourth proportional to 11,187.90, 16,761.60 and 8,863.20 is: 13,278.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,187.90 : 16,761.60 = 8,863.20 : x
  2. Step 2: Convert to fraction form
    11,187.90/16,761.60 = 8,863.20/x
  3. Step 3: Cross multiply
    11,187.90x = 16,761.60 × 8,863.20
  4. Step 4: Simplify right side
    11,187.90x = 148,561,413.12
  5. Step 5: Solve for x
    x = 148,561,413.12/11,187.90
  6. Step 6: Final answer
    x = 13,278.76

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1.5x scale

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.