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Finding the Fourth Proportional to 27,608.80, 41,456.40 and 21,042.40

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Solution

The fourth proportional to 27,608.80, 41,456.40 and 21,042.40 is: 31,596.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,608.80 : 41,456.40 = 21,042.40 : x
  2. Step 2: Convert to fraction form
    27,608.80/41,456.40 = 21,042.40/x
  3. Step 3: Cross multiply
    27,608.80x = 41,456.40 × 21,042.40
  4. Step 4: Simplify right side
    27,608.80x = 872,342,151.36
  5. Step 5: Solve for x
    x = 872,342,151.36/27,608.80
  6. Step 6: Final answer
    x = 31,596.53

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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.