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Finding the Fourth Proportional to 18,080.60, 27,101.10 and 6,387.80

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Solution

The fourth proportional to 18,080.60, 27,101.10 and 6,387.80 is: 9,574.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,080.60 : 27,101.10 = 6,387.80 : x
  2. Step 2: Convert to fraction form
    18,080.60/27,101.10 = 6,387.80/x
  3. Step 3: Cross multiply
    18,080.60x = 27,101.10 × 6,387.80
  4. Step 4: Simplify right side
    18,080.60x = 173,116,406.58
  5. Step 5: Solve for x
    x = 173,116,406.58/18,080.60
  6. Step 6: Final answer
    x = 9,574.70

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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.