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Finding the Fourth Proportional to 18,057.20, 24,919.10 and 9,992.04

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Solution

The fourth proportional to 18,057.20, 24,919.10 and 9,992.04 is: 13,789.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,057.20 : 24,919.10 = 9,992.04 : x
  2. Step 2: Convert to fraction form
    18,057.20/24,919.10 = 9,992.04/x
  3. Step 3: Cross multiply
    18,057.20x = 24,919.10 × 9,992.04
  4. Step 4: Simplify right side
    18,057.20x = 248,992,643.96
  5. Step 5: Solve for x
    x = 248,992,643.96/18,057.20
  6. Step 6: Final answer
    x = 13,789.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.