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Finding the Fourth Proportional to 18,079.92, 27,121.92 and 6,394.32

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Solution

The fourth proportional to 18,079.92, 27,121.92 and 6,394.32 is: 9,592.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,079.92 : 27,121.92 = 6,394.32 : x
  2. Step 2: Convert to fraction form
    18,079.92/27,121.92 = 6,394.32/x
  3. Step 3: Cross multiply
    18,079.92x = 27,121.92 × 6,394.32
  4. Step 4: Simplify right side
    18,079.92x = 173,426,235.49
  5. Step 5: Solve for x
    x = 173,426,235.49/18,079.92
  6. Step 6: Final answer
    x = 9,592.20

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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.