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Finding the Fourth Proportional to 22,705.88, 34,062.56 and 7,919.12

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Solution

The fourth proportional to 22,705.88, 34,062.56 and 7,919.12 is: 11,879.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,705.88 : 34,062.56 = 7,919.12 : x
  2. Step 2: Convert to fraction form
    22,705.88/34,062.56 = 7,919.12/x
  3. Step 3: Cross multiply
    22,705.88x = 34,062.56 × 7,919.12
  4. Step 4: Simplify right side
    22,705.88x = 269,745,290.24
  5. Step 5: Solve for x
    x = 269,745,290.24/22,705.88
  6. Step 6: Final answer
    x = 11,879.98

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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.