Home / 10,331.20-15,495.60-2,936.80

Finding the Fourth Proportional to 10,331.20, 15,495.60 and 2,936.80

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Solution

The fourth proportional to 10,331.20, 15,495.60 and 2,936.80 is: 4,404.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,331.20 : 15,495.60 = 2,936.80 : x
  2. Step 2: Convert to fraction form
    10,331.20/15,495.60 = 2,936.80/x
  3. Step 3: Cross multiply
    10,331.20x = 15,495.60 × 2,936.80
  4. Step 4: Simplify right side
    10,331.20x = 45,507,478.08
  5. Step 5: Solve for x
    x = 45,507,478.08/10,331.20
  6. Step 6: Final answer
    x = 4,404.86

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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.