Home / 21,174.24-29,207.22-13,630.38

Finding the Fourth Proportional to 21,174.24, 29,207.22 and 13,630.38

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Solution

The fourth proportional to 21,174.24, 29,207.22 and 13,630.38 is: 18,801.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,174.24 : 29,207.22 = 13,630.38 : x
  2. Step 2: Convert to fraction form
    21,174.24/29,207.22 = 13,630.38/x
  3. Step 3: Cross multiply
    21,174.24x = 29,207.22 × 13,630.38
  4. Step 4: Simplify right side
    21,174.24x = 398,105,507.34
  5. Step 5: Solve for x
    x = 398,105,507.34/21,174.24
  6. Step 6: Final answer
    x = 18,801.41

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1.5x scale

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.