Home / 21,188.72-29,240.34-11,757.26

Finding the Fourth Proportional to 21,188.72, 29,240.34 and 11,757.26

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Solution

The fourth proportional to 21,188.72, 29,240.34 and 11,757.26 is: 16,224.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,188.72 : 29,240.34 = 11,757.26 : x
  2. Step 2: Convert to fraction form
    21,188.72/29,240.34 = 11,757.26/x
  3. Step 3: Cross multiply
    21,188.72x = 29,240.34 × 11,757.26
  4. Step 4: Simplify right side
    21,188.72x = 343,786,279.87
  5. Step 5: Solve for x
    x = 343,786,279.87/21,188.72
  6. Step 6: Final answer
    x = 16,224.97

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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.