Home / 15,456.20-23,169.90-12,122.60

Finding the Fourth Proportional to 15,456.20, 23,169.90 and 12,122.60

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Solution

The fourth proportional to 15,456.20, 23,169.90 and 12,122.60 is: 18,172.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,456.20 : 23,169.90 = 12,122.60 : x
  2. Step 2: Convert to fraction form
    15,456.20/23,169.90 = 12,122.60/x
  3. Step 3: Cross multiply
    15,456.20x = 23,169.90 × 12,122.60
  4. Step 4: Simplify right side
    15,456.20x = 280,879,429.74
  5. Step 5: Solve for x
    x = 280,879,429.74/15,456.20
  6. Step 6: Final answer
    x = 18,172.61

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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.