Home / 13,857.87-20,773.85-5,090.43

Finding the Fourth Proportional to 13,857.87, 20,773.85 and 5,090.43

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Solution

The fourth proportional to 13,857.87, 20,773.85 and 5,090.43 is: 7,630.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,857.87 : 20,773.85 = 5,090.43 : x
  2. Step 2: Convert to fraction form
    13,857.87/20,773.85 = 5,090.43/x
  3. Step 3: Cross multiply
    13,857.87x = 20,773.85 × 5,090.43
  4. Step 4: Simplify right side
    13,857.87x = 105,747,803.80
  5. Step 5: Solve for x
    x = 105,747,803.80/13,857.87
  6. Step 6: Final answer
    x = 7,630.88

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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.