Home / 11,190.75-15,440.10-7,214.19

Finding the Fourth Proportional to 11,190.75, 15,440.10 and 7,214.19

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Solution

The fourth proportional to 11,190.75, 15,440.10 and 7,214.19 is: 9,953.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,190.75 : 15,440.10 = 7,214.19 : x
  2. Step 2: Convert to fraction form
    11,190.75/15,440.10 = 7,214.19/x
  3. Step 3: Cross multiply
    11,190.75x = 15,440.10 × 7,214.19
  4. Step 4: Simplify right side
    11,190.75x = 111,387,815.02
  5. Step 5: Solve for x
    x = 111,387,815.02/11,190.75
  6. Step 6: Final answer
    x = 9,953.56

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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.