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Finding the Fourth Proportional to 27,090.20, 40,619.10 and 13,968.20

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Solution

The fourth proportional to 27,090.20, 40,619.10 and 13,968.20 is: 20,943.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,090.20 : 40,619.10 = 13,968.20 : x
  2. Step 2: Convert to fraction form
    27,090.20/40,619.10 = 13,968.20/x
  3. Step 3: Cross multiply
    27,090.20x = 40,619.10 × 13,968.20
  4. Step 4: Simplify right side
    27,090.20x = 567,375,712.62
  5. Step 5: Solve for x
    x = 567,375,712.62/27,090.20
  6. Step 6: Final answer
    x = 20,943.95

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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.