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Finding the Fourth Proportional to 10,987.85, 16,481.78 and 7,297.29

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Solution

The fourth proportional to 10,987.85, 16,481.78 and 7,297.29 is: 10,945.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,987.85 : 16,481.78 = 7,297.29 : x
  2. Step 2: Convert to fraction form
    10,987.85/16,481.78 = 7,297.29/x
  3. Step 3: Cross multiply
    10,987.85x = 16,481.78 × 7,297.29
  4. Step 4: Simplify right side
    10,987.85x = 120,272,319.25
  5. Step 5: Solve for x
    x = 120,272,319.25/10,987.85
  6. Step 6: Final answer
    x = 10,945.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.