Home / 11,251.52-16,851.36-7,791.20

Finding the Fourth Proportional to 11,251.52, 16,851.36 and 7,791.20

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Solution

The fourth proportional to 11,251.52, 16,851.36 and 7,791.20 is: 11,668.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,251.52 : 16,851.36 = 7,791.20 : x
  2. Step 2: Convert to fraction form
    11,251.52/16,851.36 = 7,791.20/x
  3. Step 3: Cross multiply
    11,251.52x = 16,851.36 × 7,791.20
  4. Step 4: Simplify right side
    11,251.52x = 131,292,316.03
  5. Step 5: Solve for x
    x = 131,292,316.03/11,251.52
  6. Step 6: Final answer
    x = 11,668.85

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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.