Home / 21,236.28-29,306.40-11,676.57

Finding the Fourth Proportional to 21,236.28, 29,306.40 and 11,676.57

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Solution

The fourth proportional to 21,236.28, 29,306.40 and 11,676.57 is: 16,113.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,236.28 : 29,306.40 = 11,676.57 : x
  2. Step 2: Convert to fraction form
    21,236.28/29,306.40 = 11,676.57/x
  3. Step 3: Cross multiply
    21,236.28x = 29,306.40 × 11,676.57
  4. Step 4: Simplify right side
    21,236.28x = 342,198,231.05
  5. Step 5: Solve for x
    x = 342,198,231.05/21,236.28
  6. Step 6: Final answer
    x = 16,113.85

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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.