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Finding the Fourth Proportional to 18,007.40, 27,007.68 and 7,626.44

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Solution

The fourth proportional to 18,007.40, 27,007.68 and 7,626.44 is: 11,438.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,007.40 : 27,007.68 = 7,626.44 : x
  2. Step 2: Convert to fraction form
    18,007.40/27,007.68 = 7,626.44/x
  3. Step 3: Cross multiply
    18,007.40x = 27,007.68 × 7,626.44
  4. Step 4: Simplify right side
    18,007.40x = 205,972,451.06
  5. Step 5: Solve for x
    x = 205,972,451.06/18,007.40
  6. Step 6: Final answer
    x = 11,438.21

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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.