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Finding the Fourth Proportional to 27,221.90, 40,749.92 and 21,907.49

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Solution

The fourth proportional to 27,221.90, 40,749.92 and 21,907.49 is: 32,794.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,221.90 : 40,749.92 = 21,907.49 : x
  2. Step 2: Convert to fraction form
    27,221.90/40,749.92 = 21,907.49/x
  3. Step 3: Cross multiply
    27,221.90x = 40,749.92 × 21,907.49
  4. Step 4: Simplify right side
    27,221.90x = 892,728,151.61
  5. Step 5: Solve for x
    x = 892,728,151.61/27,221.90
  6. Step 6: Final answer
    x = 32,794.49

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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.