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Finding the Fourth Proportional to 18,042.60, 27,080.78 and 9,164.28

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Solution

The fourth proportional to 18,042.60, 27,080.78 and 9,164.28 is: 13,754.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,042.60 : 27,080.78 = 9,164.28 : x
  2. Step 2: Convert to fraction form
    18,042.60/27,080.78 = 9,164.28/x
  3. Step 3: Cross multiply
    18,042.60x = 27,080.78 × 9,164.28
  4. Step 4: Simplify right side
    18,042.60x = 248,175,804.72
  5. Step 5: Solve for x
    x = 248,175,804.72/18,042.60
  6. Step 6: Final answer
    x = 13,754.99

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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.