Home / 13,927.40-20,889.61-3,931.90

Finding the Fourth Proportional to 13,927.40, 20,889.61 and 3,931.90

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Solution

The fourth proportional to 13,927.40, 20,889.61 and 3,931.90 is: 5,897.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,927.40 : 20,889.61 = 3,931.90 : x
  2. Step 2: Convert to fraction form
    13,927.40/20,889.61 = 3,931.90/x
  3. Step 3: Cross multiply
    13,927.40x = 20,889.61 × 3,931.90
  4. Step 4: Simplify right side
    13,927.40x = 82,135,857.56
  5. Step 5: Solve for x
    x = 82,135,857.56/13,927.40
  6. Step 6: Final answer
    x = 5,897.43

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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.