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Finding the Fourth Proportional to 26,650.80, 39,976.19 and 7,931.10

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Solution

The fourth proportional to 26,650.80, 39,976.19 and 7,931.10 is: 11,896.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,650.80 : 39,976.19 = 7,931.10 : x
  2. Step 2: Convert to fraction form
    26,650.80/39,976.19 = 7,931.10/x
  3. Step 3: Cross multiply
    26,650.80x = 39,976.19 × 7,931.10
  4. Step 4: Simplify right side
    26,650.80x = 317,055,150.60
  5. Step 5: Solve for x
    x = 317,055,150.60/26,650.80
  6. Step 6: Final answer
    x = 11,896.65

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Double scale
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Similar ratio
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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.