Home / 21,196.38-29,250.12-11,765.55

Finding the Fourth Proportional to 21,196.38, 29,250.12 and 11,765.55

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Solution

The fourth proportional to 21,196.38, 29,250.12 and 11,765.55 is: 16,235.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,196.38 : 29,250.12 = 11,765.55 : x
  2. Step 2: Convert to fraction form
    21,196.38/29,250.12 = 11,765.55/x
  3. Step 3: Cross multiply
    21,196.38x = 29,250.12 × 11,765.55
  4. Step 4: Simplify right side
    21,196.38x = 344,143,749.37
  5. Step 5: Solve for x
    x = 344,143,749.37/21,196.38
  6. Step 6: Final answer
    x = 16,235.97

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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.