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Finding the Fourth Proportional to 19,895.31, 29,850.84 and 8,205.84

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Solution

The fourth proportional to 19,895.31, 29,850.84 and 8,205.84 is: 12,312.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,895.31 : 29,850.84 = 8,205.84 : x
  2. Step 2: Convert to fraction form
    19,895.31/29,850.84 = 8,205.84/x
  3. Step 3: Cross multiply
    19,895.31x = 29,850.84 × 8,205.84
  4. Step 4: Simplify right side
    19,895.31x = 244,951,216.91
  5. Step 5: Solve for x
    x = 244,951,216.91/19,895.31
  6. Step 6: Final answer
    x = 12,312.01

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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.