Home / 12,039.60-18,056.16-8,167.80

Finding the Fourth Proportional to 12,039.60, 18,056.16 and 8,167.80

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Solution

The fourth proportional to 12,039.60, 18,056.16 and 8,167.80 is: 12,249.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,039.60 : 18,056.16 = 8,167.80 : x
  2. Step 2: Convert to fraction form
    12,039.60/18,056.16 = 8,167.80/x
  3. Step 3: Cross multiply
    12,039.60x = 18,056.16 × 8,167.80
  4. Step 4: Simplify right side
    12,039.60x = 147,479,103.65
  5. Step 5: Solve for x
    x = 147,479,103.65/12,039.60
  6. Step 6: Final answer
    x = 12,249.50

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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.