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Finding the Fourth Proportional to 26,447.91, 39,672.80 and 8,917.89

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Solution

The fourth proportional to 26,447.91, 39,672.80 and 8,917.89 is: 13,377.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,447.91 : 39,672.80 = 8,917.89 : x
  2. Step 2: Convert to fraction form
    26,447.91/39,672.80 = 8,917.89/x
  3. Step 3: Cross multiply
    26,447.91x = 39,672.80 × 8,917.89
  4. Step 4: Simplify right side
    26,447.91x = 353,797,666.39
  5. Step 5: Solve for x
    x = 353,797,666.39/26,447.91
  6. Step 6: Final answer
    x = 13,377.15

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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.