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Finding the Fourth Proportional to 26,640.62, 39,963.09 and 8,870.64

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Solution

The fourth proportional to 26,640.62, 39,963.09 and 8,870.64 is: 13,306.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,640.62 : 39,963.09 = 8,870.64 : x
  2. Step 2: Convert to fraction form
    26,640.62/39,963.09 = 8,870.64/x
  3. Step 3: Cross multiply
    26,640.62x = 39,963.09 × 8,870.64
  4. Step 4: Simplify right side
    26,640.62x = 354,498,184.68
  5. Step 5: Solve for x
    x = 354,498,184.68/26,640.62
  6. Step 6: Final answer
    x = 13,306.68

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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.