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Finding the Fourth Proportional to 11,351.50, 15,665.07 and 6,383.50

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Solution

The fourth proportional to 11,351.50, 15,665.07 and 6,383.50 is: 8,809.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,351.50 : 15,665.07 = 6,383.50 : x
  2. Step 2: Convert to fraction form
    11,351.50/15,665.07 = 6,383.50/x
  3. Step 3: Cross multiply
    11,351.50x = 15,665.07 × 6,383.50
  4. Step 4: Simplify right side
    11,351.50x = 99,997,974.35
  5. Step 5: Solve for x
    x = 99,997,974.35/11,351.50
  6. Step 6: Final answer
    x = 8,809.23

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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.