Home / 10,420.75-15,627.20-3,399.11

Finding the Fourth Proportional to 10,420.75, 15,627.20 and 3,399.11

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Solution

The fourth proportional to 10,420.75, 15,627.20 and 3,399.11 is: 5,097.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,420.75 : 15,627.20 = 3,399.11 : x
  2. Step 2: Convert to fraction form
    10,420.75/15,627.20 = 3,399.11/x
  3. Step 3: Cross multiply
    10,420.75x = 15,627.20 × 3,399.11
  4. Step 4: Simplify right side
    10,420.75x = 53,118,476.66
  5. Step 5: Solve for x
    x = 53,118,476.66/10,420.75
  6. Step 6: Final answer
    x = 5,097.38

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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.