Home / 27,091.20-40,621.50-12,649.80

Finding the Fourth Proportional to 27,091.20, 40,621.50 and 12,649.80

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Solution

The fourth proportional to 27,091.20, 40,621.50 and 12,649.80 is: 18,967.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,091.20 : 40,621.50 = 12,649.80 : x
  2. Step 2: Convert to fraction form
    27,091.20/40,621.50 = 12,649.80/x
  3. Step 3: Cross multiply
    27,091.20x = 40,621.50 × 12,649.80
  4. Step 4: Simplify right side
    27,091.20x = 513,853,850.70
  5. Step 5: Solve for x
    x = 513,853,850.70/27,091.20
  6. Step 6: Final answer
    x = 18,967.56

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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.