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Finding the Fourth Proportional to 18,115.27, 27,169.45 and 5,635.45

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Solution

The fourth proportional to 18,115.27, 27,169.45 and 5,635.45 is: 8,452.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,115.27 : 27,169.45 = 5,635.45 : x
  2. Step 2: Convert to fraction form
    18,115.27/27,169.45 = 5,635.45/x
  3. Step 3: Cross multiply
    18,115.27x = 27,169.45 × 5,635.45
  4. Step 4: Simplify right side
    18,115.27x = 153,112,036.31
  5. Step 5: Solve for x
    x = 153,112,036.31/18,115.27
  6. Step 6: Final answer
    x = 8,452.10

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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.