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Finding the Fourth Proportional to 27,080.81, 40,627.70 and 13,720.49

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Solution

The fourth proportional to 27,080.81, 40,627.70 and 13,720.49 is: 20,584.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,080.81 : 40,627.70 = 13,720.49 : x
  2. Step 2: Convert to fraction form
    27,080.81/40,627.70 = 13,720.49/x
  3. Step 3: Cross multiply
    27,080.81x = 40,627.70 × 13,720.49
  4. Step 4: Simplify right side
    27,080.81x = 557,431,882.97
  5. Step 5: Solve for x
    x = 557,431,882.97/27,080.81
  6. Step 6: Final answer
    x = 20,584.02

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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.