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Finding the Fourth Proportional to 26,615.82, 39,916.92 and 7,891.48

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Solution

The fourth proportional to 26,615.82, 39,916.92 and 7,891.48 is: 11,835.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,615.82 : 39,916.92 = 7,891.48 : x
  2. Step 2: Convert to fraction form
    26,615.82/39,916.92 = 7,891.48/x
  3. Step 3: Cross multiply
    26,615.82x = 39,916.92 × 7,891.48
  4. Step 4: Simplify right side
    26,615.82x = 315,003,575.84
  5. Step 5: Solve for x
    x = 315,003,575.84/26,615.82
  6. Step 6: Final answer
    x = 11,835.20

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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.