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Finding the Fourth Proportional to 27,120.48, 37,399.96 and 21,149.96

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Solution

The fourth proportional to 27,120.48, 37,399.96 and 21,149.96 is: 29,166.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,120.48 : 37,399.96 = 21,149.96 : x
  2. Step 2: Convert to fraction form
    27,120.48/37,399.96 = 21,149.96/x
  3. Step 3: Cross multiply
    27,120.48x = 37,399.96 × 21,149.96
  4. Step 4: Simplify right side
    27,120.48x = 791,007,658.00
  5. Step 5: Solve for x
    x = 791,007,658.00/27,120.48
  6. Step 6: Final answer
    x = 29,166.43

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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.