Home / 21,174.72-29,220.90-11,614.40

Finding the Fourth Proportional to 21,174.72, 29,220.90 and 11,614.40

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Solution

The fourth proportional to 21,174.72, 29,220.90 and 11,614.40 is: 16,027.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,174.72 : 29,220.90 = 11,614.40 : x
  2. Step 2: Convert to fraction form
    21,174.72/29,220.90 = 11,614.40/x
  3. Step 3: Cross multiply
    21,174.72x = 29,220.90 × 11,614.40
  4. Step 4: Simplify right side
    21,174.72x = 339,383,323.05
  5. Step 5: Solve for x
    x = 339,383,323.05/21,174.72
  6. Step 6: Final answer
    x = 16,027.76

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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.