Home / 14,090.82-19,440.92-8,121.69

Finding the Fourth Proportional to 14,090.82, 19,440.92 and 8,121.69

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Solution

The fourth proportional to 14,090.82, 19,440.92 and 8,121.69 is: 11,205.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,090.82 : 19,440.92 = 8,121.69 : x
  2. Step 2: Convert to fraction form
    14,090.82/19,440.92 = 8,121.69/x
  3. Step 3: Cross multiply
    14,090.82x = 19,440.92 × 8,121.69
  4. Step 4: Simplify right side
    14,090.82x = 157,893,084.95
  5. Step 5: Solve for x
    x = 157,893,084.95/14,090.82
  6. Step 6: Final answer
    x = 11,205.39

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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.