Home / 12,198.60-18,269.10-8,281.80

Finding the Fourth Proportional to 12,198.60, 18,269.10 and 8,281.80

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Solution

The fourth proportional to 12,198.60, 18,269.10 and 8,281.80 is: 12,403.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,198.60 : 18,269.10 = 8,281.80 : x
  2. Step 2: Convert to fraction form
    12,198.60/18,269.10 = 8,281.80/x
  3. Step 3: Cross multiply
    12,198.60x = 18,269.10 × 8,281.80
  4. Step 4: Simplify right side
    12,198.60x = 151,301,032.38
  5. Step 5: Solve for x
    x = 151,301,032.38/12,198.60
  6. Step 6: Final answer
    x = 12,403.15

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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.