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Finding the Fourth Proportional to 22,921.56, 34,382.34 and 8,129.88

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Solution

The fourth proportional to 22,921.56, 34,382.34 and 8,129.88 is: 12,194.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,921.56 : 34,382.34 = 8,129.88 : x
  2. Step 2: Convert to fraction form
    22,921.56/34,382.34 = 8,129.88/x
  3. Step 3: Cross multiply
    22,921.56x = 34,382.34 × 8,129.88
  4. Step 4: Simplify right side
    22,921.56x = 279,524,298.32
  5. Step 5: Solve for x
    x = 279,524,298.32/22,921.56
  6. Step 6: Final answer
    x = 12,194.82

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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.