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Finding the Fourth Proportional to 17,805.84, 26,711.82 and 7,944.90

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Solution

The fourth proportional to 17,805.84, 26,711.82 and 7,944.90 is: 11,918.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,805.84 : 26,711.82 = 7,944.90 : x
  2. Step 2: Convert to fraction form
    17,805.84/26,711.82 = 7,944.90/x
  3. Step 3: Cross multiply
    17,805.84x = 26,711.82 × 7,944.90
  4. Step 4: Simplify right side
    17,805.84x = 212,222,738.72
  5. Step 5: Solve for x
    x = 212,222,738.72/17,805.84
  6. Step 6: Final answer
    x = 11,918.72

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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.