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Finding the Fourth Proportional to 12,198.30, 18,297.45 and 8,310.30

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Solution

The fourth proportional to 12,198.30, 18,297.45 and 8,310.30 is: 12,465.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,198.30 : 18,297.45 = 8,310.30 : x
  2. Step 2: Convert to fraction form
    12,198.30/18,297.45 = 8,310.30/x
  3. Step 3: Cross multiply
    12,198.30x = 18,297.45 × 8,310.30
  4. Step 4: Simplify right side
    12,198.30x = 152,057,298.74
  5. Step 5: Solve for x
    x = 152,057,298.74/12,198.30
  6. Step 6: Final answer
    x = 12,465.45

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Half scale
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Similar ratio
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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.