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Finding the Fourth Proportional to 16,449.78, 22,674.03 and 12,858.39

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Solution

The fourth proportional to 16,449.78, 22,674.03 and 12,858.39 is: 17,723.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,449.78 : 22,674.03 = 12,858.39 : x
  2. Step 2: Convert to fraction form
    16,449.78/22,674.03 = 12,858.39/x
  3. Step 3: Cross multiply
    16,449.78x = 22,674.03 × 12,858.39
  4. Step 4: Simplify right side
    16,449.78x = 291,551,520.61
  5. Step 5: Solve for x
    x = 291,551,520.61/16,449.78
  6. Step 6: Final answer
    x = 17,723.73

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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.