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Finding the Fourth Proportional to 27,321.01, 40,917.72 and 21,031.11

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Solution

The fourth proportional to 27,321.01, 40,917.72 and 21,031.11 is: 31,497.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,321.01 : 40,917.72 = 21,031.11 : x
  2. Step 2: Convert to fraction form
    27,321.01/40,917.72 = 21,031.11/x
  3. Step 3: Cross multiply
    27,321.01x = 40,917.72 × 21,031.11
  4. Step 4: Simplify right side
    27,321.01x = 860,545,149.14
  5. Step 5: Solve for x
    x = 860,545,149.14/27,321.01
  6. Step 6: Final answer
    x = 31,497.56

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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.