Home / 21,201.20-29,256.52-11,769.16

Finding the Fourth Proportional to 21,201.20, 29,256.52 and 11,769.16

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Solution

The fourth proportional to 21,201.20, 29,256.52 and 11,769.16 is: 16,240.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,201.20 : 29,256.52 = 11,769.16 : x
  2. Step 2: Convert to fraction form
    21,201.20/29,256.52 = 11,769.16/x
  3. Step 3: Cross multiply
    21,201.20x = 29,256.52 × 11,769.16
  4. Step 4: Simplify right side
    21,201.20x = 344,324,459.79
  5. Step 5: Solve for x
    x = 344,324,459.79/21,201.20
  6. Step 6: Final answer
    x = 16,240.80

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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.