Home / 11,643.43-16,086.75-8,122.36

Finding the Fourth Proportional to 11,643.43, 16,086.75 and 8,122.36

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Solution

The fourth proportional to 11,643.43, 16,086.75 and 8,122.36 is: 11,221.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,643.43 : 16,086.75 = 8,122.36 : x
  2. Step 2: Convert to fraction form
    11,643.43/16,086.75 = 8,122.36/x
  3. Step 3: Cross multiply
    11,643.43x = 16,086.75 × 8,122.36
  4. Step 4: Simplify right side
    11,643.43x = 130,662,374.73
  5. Step 5: Solve for x
    x = 130,662,374.73/11,643.43
  6. Step 6: Final answer
    x = 11,221.98

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Half scale
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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.