Home / 12,791.20-17,651.84-7,202.24

Finding the Fourth Proportional to 12,791.20, 17,651.84 and 7,202.24

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Solution

The fourth proportional to 12,791.20, 17,651.84 and 7,202.24 is: 9,939.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,791.20 : 17,651.84 = 7,202.24 : x
  2. Step 2: Convert to fraction form
    12,791.20/17,651.84 = 7,202.24/x
  3. Step 3: Cross multiply
    12,791.20x = 17,651.84 × 7,202.24
  4. Step 4: Simplify right side
    12,791.20x = 127,132,788.12
  5. Step 5: Solve for x
    x = 127,132,788.12/12,791.20
  6. Step 6: Final answer
    x = 9,939.08

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1.5x scale

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.