Home / 9,520.82-13,129.09-7,339.28

Finding the Fourth Proportional to 9,520.82, 13,129.09 and 7,339.28

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Solution

The fourth proportional to 9,520.82, 13,129.09 and 7,339.28 is: 10,120.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,520.82 : 13,129.09 = 7,339.28 : x
  2. Step 2: Convert to fraction form
    9,520.82/13,129.09 = 7,339.28/x
  3. Step 3: Cross multiply
    9,520.82x = 13,129.09 × 7,339.28
  4. Step 4: Simplify right side
    9,520.82x = 96,358,067.66
  5. Step 5: Solve for x
    x = 96,358,067.66/9,520.82
  6. Step 6: Final answer
    x = 10,120.77

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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.