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Finding the Fourth Proportional to 19,864.92, 29,797.38 and 8,179.08

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Solution

The fourth proportional to 19,864.92, 29,797.38 and 8,179.08 is: 12,268.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,864.92 : 29,797.38 = 8,179.08 : x
  2. Step 2: Convert to fraction form
    19,864.92/29,797.38 = 8,179.08/x
  3. Step 3: Cross multiply
    19,864.92x = 29,797.38 × 8,179.08
  4. Step 4: Simplify right side
    19,864.92x = 243,715,154.81
  5. Step 5: Solve for x
    x = 243,715,154.81/19,864.92
  6. Step 6: Final answer
    x = 12,268.62

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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.