Home / 11,104.80-15,308.39-8,447.59

Finding the Fourth Proportional to 11,104.80, 15,308.39 and 8,447.59

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Solution

The fourth proportional to 11,104.80, 15,308.39 and 8,447.59 is: 11,645.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,104.80 : 15,308.39 = 8,447.59 : x
  2. Step 2: Convert to fraction form
    11,104.80/15,308.39 = 8,447.59/x
  3. Step 3: Cross multiply
    11,104.80x = 15,308.39 × 8,447.59
  4. Step 4: Simplify right side
    11,104.80x = 129,319,042.53
  5. Step 5: Solve for x
    x = 129,319,042.53/11,104.80
  6. Step 6: Final answer
    x = 11,645.33

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Half scale
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Double scale
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Similar ratio
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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.