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Finding the Fourth Proportional to 26,586.28, 39,879.48 and 7,866.64

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Solution

The fourth proportional to 26,586.28, 39,879.48 and 7,866.64 is: 11,799.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,586.28 : 39,879.48 = 7,866.64 : x
  2. Step 2: Convert to fraction form
    26,586.28/39,879.48 = 7,866.64/x
  3. Step 3: Cross multiply
    26,586.28x = 39,879.48 × 7,866.64
  4. Step 4: Simplify right side
    26,586.28x = 313,717,512.55
  5. Step 5: Solve for x
    x = 313,717,512.55/26,586.28
  6. Step 6: Final answer
    x = 11,799.98

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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.