Home / 13,101.52-18,067.46-8,619.69

Finding the Fourth Proportional to 13,101.52, 18,067.46 and 8,619.69

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Solution

The fourth proportional to 13,101.52, 18,067.46 and 8,619.69 is: 11,886.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,101.52 : 18,067.46 = 8,619.69 : x
  2. Step 2: Convert to fraction form
    13,101.52/18,067.46 = 8,619.69/x
  3. Step 3: Cross multiply
    13,101.52x = 18,067.46 × 8,619.69
  4. Step 4: Simplify right side
    13,101.52x = 155,735,770.85
  5. Step 5: Solve for x
    x = 155,735,770.85/13,101.52
  6. Step 6: Final answer
    x = 11,886.85

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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.