Home / 11,144.57-15,351.62-8,487.36

Finding the Fourth Proportional to 11,144.57, 15,351.62 and 8,487.36

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Solution

The fourth proportional to 11,144.57, 15,351.62 and 8,487.36 is: 11,691.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,144.57 : 15,351.62 = 8,487.36 : x
  2. Step 2: Convert to fraction form
    11,144.57/15,351.62 = 8,487.36/x
  3. Step 3: Cross multiply
    11,144.57x = 15,351.62 × 8,487.36
  4. Step 4: Simplify right side
    11,144.57x = 130,294,683.09
  5. Step 5: Solve for x
    x = 130,294,683.09/11,144.57
  6. Step 6: Final answer
    x = 11,691.32

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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.