Home / 13,874.50-20,808.29-5,442.72

Finding the Fourth Proportional to 13,874.50, 20,808.29 and 5,442.72

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Solution

The fourth proportional to 13,874.50, 20,808.29 and 5,442.72 is: 8,162.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,874.50 : 20,808.29 = 5,442.72 : x
  2. Step 2: Convert to fraction form
    13,874.50/20,808.29 = 5,442.72/x
  3. Step 3: Cross multiply
    13,874.50x = 20,808.29 × 5,442.72
  4. Step 4: Simplify right side
    13,874.50x = 113,253,659.63
  5. Step 5: Solve for x
    x = 113,253,659.63/13,874.50
  6. Step 6: Final answer
    x = 8,162.72

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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.