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Finding the Fourth Proportional to 26,447.75, 39,673.25 and 7,979.75

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Solution

The fourth proportional to 26,447.75, 39,673.25 and 7,979.75 is: 11,970.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,447.75 : 39,673.25 = 7,979.75 : x
  2. Step 2: Convert to fraction form
    26,447.75/39,673.25 = 7,979.75/x
  3. Step 3: Cross multiply
    26,447.75x = 39,673.25 × 7,979.75
  4. Step 4: Simplify right side
    26,447.75x = 316,582,576.79
  5. Step 5: Solve for x
    x = 316,582,576.79/26,447.75
  6. Step 6: Final answer
    x = 11,970.11

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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.