Home / 13,419.45-20,122.63-4,057.66

Finding the Fourth Proportional to 13,419.45, 20,122.63 and 4,057.66

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Solution

The fourth proportional to 13,419.45, 20,122.63 and 4,057.66 is: 6,084.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,419.45 : 20,122.63 = 4,057.66 : x
  2. Step 2: Convert to fraction form
    13,419.45/20,122.63 = 4,057.66/x
  3. Step 3: Cross multiply
    13,419.45x = 20,122.63 × 4,057.66
  4. Step 4: Simplify right side
    13,419.45x = 81,650,790.85
  5. Step 5: Solve for x
    x = 81,650,790.85/13,419.45
  6. Step 6: Final answer
    x = 6,084.51

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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.