Home / 13,481.12-18,603.69-7,512.66

Finding the Fourth Proportional to 13,481.12, 18,603.69 and 7,512.66

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Solution

The fourth proportional to 13,481.12, 18,603.69 and 7,512.66 is: 10,367.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,481.12 : 18,603.69 = 7,512.66 : x
  2. Step 2: Convert to fraction form
    13,481.12/18,603.69 = 7,512.66/x
  3. Step 3: Cross multiply
    13,481.12x = 18,603.69 × 7,512.66
  4. Step 4: Simplify right side
    13,481.12x = 139,763,067.13
  5. Step 5: Solve for x
    x = 139,763,067.13/13,481.12
  6. Step 6: Final answer
    x = 10,367.32

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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.