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Finding the Fourth Proportional to 27,407.80, 41,127.90 and 19,993.60

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Solution

The fourth proportional to 27,407.80, 41,127.90 and 19,993.60 is: 30,002.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,407.80 : 41,127.90 = 19,993.60 : x
  2. Step 2: Convert to fraction form
    27,407.80/41,127.90 = 19,993.60/x
  3. Step 3: Cross multiply
    27,407.80x = 41,127.90 × 19,993.60
  4. Step 4: Simplify right side
    27,407.80x = 822,294,781.44
  5. Step 5: Solve for x
    x = 822,294,781.44/27,407.80
  6. Step 6: Final answer
    x = 30,002.22

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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.