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Finding the Fourth Proportional to 27,121.97, 40,627.08 and 13,040.42

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Solution

The fourth proportional to 27,121.97, 40,627.08 and 13,040.42 is: 19,533.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,121.97 : 40,627.08 = 13,040.42 : x
  2. Step 2: Convert to fraction form
    27,121.97/40,627.08 = 13,040.42/x
  3. Step 3: Cross multiply
    27,121.97x = 40,627.08 × 13,040.42
  4. Step 4: Simplify right side
    27,121.97x = 529,794,186.57
  5. Step 5: Solve for x
    x = 529,794,186.57/27,121.97
  6. Step 6: Final answer
    x = 19,533.76

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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.