Home / 21,174.76-29,209.26-13,622.02

Finding the Fourth Proportional to 21,174.76, 29,209.26 and 13,622.02

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Solution

The fourth proportional to 21,174.76, 29,209.26 and 13,622.02 is: 18,790.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,174.76 : 29,209.26 = 13,622.02 : x
  2. Step 2: Convert to fraction form
    21,174.76/29,209.26 = 13,622.02/x
  3. Step 3: Cross multiply
    21,174.76x = 29,209.26 × 13,622.02
  4. Step 4: Simplify right side
    21,174.76x = 397,889,123.91
  5. Step 5: Solve for x
    x = 397,889,123.91/21,174.76
  6. Step 6: Final answer
    x = 18,790.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.