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Finding the Fourth Proportional to 16,218.80, 24,331.80 and 7,451.60

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Solution

The fourth proportional to 16,218.80, 24,331.80 and 7,451.60 is: 11,179.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,218.80 : 24,331.80 = 7,451.60 : x
  2. Step 2: Convert to fraction form
    16,218.80/24,331.80 = 7,451.60/x
  3. Step 3: Cross multiply
    16,218.80x = 24,331.80 × 7,451.60
  4. Step 4: Simplify right side
    16,218.80x = 181,310,840.88
  5. Step 5: Solve for x
    x = 181,310,840.88/16,218.80
  6. Step 6: Final answer
    x = 11,179.05

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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.