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Finding the Fourth Proportional to 26,633.66, 39,943.65 and 7,909.28

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Solution

The fourth proportional to 26,633.66, 39,943.65 and 7,909.28 is: 11,861.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,633.66 : 39,943.65 = 7,909.28 : x
  2. Step 2: Convert to fraction form
    26,633.66/39,943.65 = 7,909.28/x
  3. Step 3: Cross multiply
    26,633.66x = 39,943.65 × 7,909.28
  4. Step 4: Simplify right side
    26,633.66x = 315,925,512.07
  5. Step 5: Solve for x
    x = 315,925,512.07/26,633.66
  6. Step 6: Final answer
    x = 11,861.89

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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.