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Finding the Fourth Proportional to 12,067.98, 18,070.62 and 8,331.31

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Solution

The fourth proportional to 12,067.98, 18,070.62 and 8,331.31 is: 12,475.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,067.98 : 18,070.62 = 8,331.31 : x
  2. Step 2: Convert to fraction form
    12,067.98/18,070.62 = 8,331.31/x
  3. Step 3: Cross multiply
    12,067.98x = 18,070.62 × 8,331.31
  4. Step 4: Simplify right side
    12,067.98x = 150,551,937.11
  5. Step 5: Solve for x
    x = 150,551,937.11/12,067.98
  6. Step 6: Final answer
    x = 12,475.32

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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.