Home / 11,211.77-15,360.20-10,791.38

Finding the Fourth Proportional to 11,211.77, 15,360.20 and 10,791.38

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Solution

The fourth proportional to 11,211.77, 15,360.20 and 10,791.38 is: 14,784.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,211.77 : 15,360.20 = 10,791.38 : x
  2. Step 2: Convert to fraction form
    11,211.77/15,360.20 = 10,791.38/x
  3. Step 3: Cross multiply
    11,211.77x = 15,360.20 × 10,791.38
  4. Step 4: Simplify right side
    11,211.77x = 165,757,755.08
  5. Step 5: Solve for x
    x = 165,757,755.08/11,211.77
  6. Step 6: Final answer
    x = 14,784.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.