Home / 13,917.45-20,872.53-6,518.10

Finding the Fourth Proportional to 13,917.45, 20,872.53 and 6,518.10

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Solution

The fourth proportional to 13,917.45, 20,872.53 and 6,518.10 is: 9,775.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,917.45 : 20,872.53 = 6,518.10 : x
  2. Step 2: Convert to fraction form
    13,917.45/20,872.53 = 6,518.10/x
  3. Step 3: Cross multiply
    13,917.45x = 20,872.53 × 6,518.10
  4. Step 4: Simplify right side
    13,917.45x = 136,049,237.79
  5. Step 5: Solve for x
    x = 136,049,237.79/13,917.45
  6. Step 6: Final answer
    x = 9,775.44

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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.