Home / 21,201.22-29,257.56-11,769.76

Finding the Fourth Proportional to 21,201.22, 29,257.56 and 11,769.76

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Solution

The fourth proportional to 21,201.22, 29,257.56 and 11,769.76 is: 16,242.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,201.22 : 29,257.56 = 11,769.76 : x
  2. Step 2: Convert to fraction form
    21,201.22/29,257.56 = 11,769.76/x
  3. Step 3: Cross multiply
    21,201.22x = 29,257.56 × 11,769.76
  4. Step 4: Simplify right side
    21,201.22x = 344,354,459.39
  5. Step 5: Solve for x
    x = 344,354,459.39/21,201.22
  6. Step 6: Final answer
    x = 16,242.20

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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.