Home / 12,542.20-18,811.98-5,147.44

Finding the Fourth Proportional to 12,542.20, 18,811.98 and 5,147.44

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Solution

The fourth proportional to 12,542.20, 18,811.98 and 5,147.44 is: 7,720.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,542.20 : 18,811.98 = 5,147.44 : x
  2. Step 2: Convert to fraction form
    12,542.20/18,811.98 = 5,147.44/x
  3. Step 3: Cross multiply
    12,542.20x = 18,811.98 × 5,147.44
  4. Step 4: Simplify right side
    12,542.20x = 96,833,538.33
  5. Step 5: Solve for x
    x = 96,833,538.33/12,542.20
  6. Step 6: Final answer
    x = 7,720.62

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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.