Home / 10,122.94-15,181.96-5,190.04

Finding the Fourth Proportional to 10,122.94, 15,181.96 and 5,190.04

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Solution

The fourth proportional to 10,122.94, 15,181.96 and 5,190.04 is: 7,783.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,122.94 : 15,181.96 = 5,190.04 : x
  2. Step 2: Convert to fraction form
    10,122.94/15,181.96 = 5,190.04/x
  3. Step 3: Cross multiply
    10,122.94x = 15,181.96 × 5,190.04
  4. Step 4: Simplify right side
    10,122.94x = 78,794,979.68
  5. Step 5: Solve for x
    x = 78,794,979.68/10,122.94
  6. Step 6: Final answer
    x = 7,783.80

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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.