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Finding the Fourth Proportional to 27,997.38, 41,996.88 and 7,220.88

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Solution

The fourth proportional to 27,997.38, 41,996.88 and 7,220.88 is: 10,831.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,997.38 : 41,996.88 = 7,220.88 : x
  2. Step 2: Convert to fraction form
    27,997.38/41,996.88 = 7,220.88/x
  3. Step 3: Cross multiply
    27,997.38x = 41,996.88 × 7,220.88
  4. Step 4: Simplify right side
    27,997.38x = 303,254,430.85
  5. Step 5: Solve for x
    x = 303,254,430.85/27,997.38
  6. Step 6: Final answer
    x = 10,831.53

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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.