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Finding the Fourth Proportional to 26,616.40, 39,917.78 and 7,892.06

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Solution

The fourth proportional to 26,616.40, 39,917.78 and 7,892.06 is: 11,836.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,616.40 : 39,917.78 = 7,892.06 : x
  2. Step 2: Convert to fraction form
    26,616.40/39,917.78 = 7,892.06/x
  3. Step 3: Cross multiply
    26,616.40x = 39,917.78 × 7,892.06
  4. Step 4: Simplify right side
    26,616.40x = 315,033,514.83
  5. Step 5: Solve for x
    x = 315,033,514.83/26,616.40
  6. Step 6: Final answer
    x = 11,836.07

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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.