Home / 13,840.78-20,757.10-6,340.09

Finding the Fourth Proportional to 13,840.78, 20,757.10 and 6,340.09

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Solution

The fourth proportional to 13,840.78, 20,757.10 and 6,340.09 is: 9,508.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,840.78 : 20,757.10 = 6,340.09 : x
  2. Step 2: Convert to fraction form
    13,840.78/20,757.10 = 6,340.09/x
  3. Step 3: Cross multiply
    13,840.78x = 20,757.10 × 6,340.09
  4. Step 4: Simplify right side
    13,840.78x = 131,601,882.14
  5. Step 5: Solve for x
    x = 131,601,882.14/13,840.78
  6. Step 6: Final answer
    x = 9,508.27

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1.5x scale

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.