Home / 13,419.24-20,122.11-4,651.80

Finding the Fourth Proportional to 13,419.24, 20,122.11 and 4,651.80

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Solution

The fourth proportional to 13,419.24, 20,122.11 and 4,651.80 is: 6,975.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,419.24 : 20,122.11 = 4,651.80 : x
  2. Step 2: Convert to fraction form
    13,419.24/20,122.11 = 4,651.80/x
  3. Step 3: Cross multiply
    13,419.24x = 20,122.11 × 4,651.80
  4. Step 4: Simplify right side
    13,419.24x = 93,604,031.30
  5. Step 5: Solve for x
    x = 93,604,031.30/13,419.24
  6. Step 6: Final answer
    x = 6,975.36

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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.