Home / 11,191.75-15,441.48-7,215.19

Finding the Fourth Proportional to 11,191.75, 15,441.48 and 7,215.19

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Solution

The fourth proportional to 11,191.75, 15,441.48 and 7,215.19 is: 9,954.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,191.75 : 15,441.48 = 7,215.19 : x
  2. Step 2: Convert to fraction form
    11,191.75/15,441.48 = 7,215.19/x
  3. Step 3: Cross multiply
    11,191.75x = 15,441.48 × 7,215.19
  4. Step 4: Simplify right side
    11,191.75x = 111,413,212.08
  5. Step 5: Solve for x
    x = 111,413,212.08/11,191.75
  6. Step 6: Final answer
    x = 9,954.94

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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.