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Finding the Fourth Proportional to 26,653.25, 39,979.88 and 8,185.25

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Solution

The fourth proportional to 26,653.25, 39,979.88 and 8,185.25 is: 12,277.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,653.25 : 39,979.88 = 8,185.25 : x
  2. Step 2: Convert to fraction form
    26,653.25/39,979.88 = 8,185.25/x
  3. Step 3: Cross multiply
    26,653.25x = 39,979.88 × 8,185.25
  4. Step 4: Simplify right side
    26,653.25x = 327,245,312.77
  5. Step 5: Solve for x
    x = 327,245,312.77/26,653.25
  6. Step 6: Final answer
    x = 12,277.88

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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.