Home / 13,418.18-20,120.76-4,056.42

Finding the Fourth Proportional to 13,418.18, 20,120.76 and 4,056.42

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Solution

The fourth proportional to 13,418.18, 20,120.76 and 4,056.42 is: 6,082.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,418.18 : 20,120.76 = 4,056.42 : x
  2. Step 2: Convert to fraction form
    13,418.18/20,120.76 = 4,056.42/x
  3. Step 3: Cross multiply
    13,418.18x = 20,120.76 × 4,056.42
  4. Step 4: Simplify right side
    13,418.18x = 81,618,253.28
  5. Step 5: Solve for x
    x = 81,618,253.28/13,418.18
  6. Step 6: Final answer
    x = 6,082.66

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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.