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Finding the Fourth Proportional to 18,626.32, 27,920.04 and 6,934.78

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Solution

The fourth proportional to 18,626.32, 27,920.04 and 6,934.78 is: 10,394.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,626.32 : 27,920.04 = 6,934.78 : x
  2. Step 2: Convert to fraction form
    18,626.32/27,920.04 = 6,934.78/x
  3. Step 3: Cross multiply
    18,626.32x = 27,920.04 × 6,934.78
  4. Step 4: Simplify right side
    18,626.32x = 193,619,334.99
  5. Step 5: Solve for x
    x = 193,619,334.99/18,626.32
  6. Step 6: Final answer
    x = 10,394.93

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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.