Home / 20,910.34-31,299.09-15,614.02

Finding the Fourth Proportional to 20,910.34, 31,299.09 and 15,614.02

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Solution

The fourth proportional to 20,910.34, 31,299.09 and 15,614.02 is: 23,371.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,910.34 : 31,299.09 = 15,614.02 : x
  2. Step 2: Convert to fraction form
    20,910.34/31,299.09 = 15,614.02/x
  3. Step 3: Cross multiply
    20,910.34x = 31,299.09 × 15,614.02
  4. Step 4: Simplify right side
    20,910.34x = 488,704,617.24
  5. Step 5: Solve for x
    x = 488,704,617.24/20,910.34
  6. Step 6: Final answer
    x = 23,371.43

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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.