Home / 12,356.60-18,516.20-8,181.66

Finding the Fourth Proportional to 12,356.60, 18,516.20 and 8,181.66

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Solution

The fourth proportional to 12,356.60, 18,516.20 and 8,181.66 is: 12,260.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,356.60 : 18,516.20 = 8,181.66 : x
  2. Step 2: Convert to fraction form
    12,356.60/18,516.20 = 8,181.66/x
  3. Step 3: Cross multiply
    12,356.60x = 18,516.20 × 8,181.66
  4. Step 4: Simplify right side
    12,356.60x = 151,493,177.27
  5. Step 5: Solve for x
    x = 151,493,177.27/12,356.60
  6. Step 6: Final answer
    x = 12,260.10

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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.