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Finding the Fourth Proportional to 18,226.78, 27,340.19 and 5,079.50

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Solution

The fourth proportional to 18,226.78, 27,340.19 and 5,079.50 is: 7,619.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,226.78 : 27,340.19 = 5,079.50 : x
  2. Step 2: Convert to fraction form
    18,226.78/27,340.19 = 5,079.50/x
  3. Step 3: Cross multiply
    18,226.78x = 27,340.19 × 5,079.50
  4. Step 4: Simplify right side
    18,226.78x = 138,874,557.11
  5. Step 5: Solve for x
    x = 138,874,557.11/18,226.78
  6. Step 6: Final answer
    x = 7,619.26

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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.