Home / 11,138.25-15,370.79-6,662.19

Finding the Fourth Proportional to 11,138.25, 15,370.79 and 6,662.19

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Solution

The fourth proportional to 11,138.25, 15,370.79 and 6,662.19 is: 9,193.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,138.25 : 15,370.79 = 6,662.19 : x
  2. Step 2: Convert to fraction form
    11,138.25/15,370.79 = 6,662.19/x
  3. Step 3: Cross multiply
    11,138.25x = 15,370.79 × 6,662.19
  4. Step 4: Simplify right side
    11,138.25x = 102,403,090.12
  5. Step 5: Solve for x
    x = 102,403,090.12/11,138.25
  6. Step 6: Final answer
    x = 9,193.82

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Half scale
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Double 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.