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Finding the Fourth Proportional to 12,073.83, 18,089.63 and 8,378.42

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Solution

The fourth proportional to 12,073.83, 18,089.63 and 8,378.42 is: 12,552.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,073.83 : 18,089.63 = 8,378.42 : x
  2. Step 2: Convert to fraction form
    12,073.83/18,089.63 = 8,378.42/x
  3. Step 3: Cross multiply
    12,073.83x = 18,089.63 × 8,378.42
  4. Step 4: Simplify right side
    12,073.83x = 151,562,385.44
  5. Step 5: Solve for x
    x = 151,562,385.44/12,073.83
  6. Step 6: Final answer
    x = 12,552.97

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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.