Home / 21,169.92-31,745.60-11,306.96

Finding the Fourth Proportional to 21,169.92, 31,745.60 and 11,306.96

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Solution

The fourth proportional to 21,169.92, 31,745.60 and 11,306.96 is: 16,955.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,169.92 : 31,745.60 = 11,306.96 : x
  2. Step 2: Convert to fraction form
    21,169.92/31,745.60 = 11,306.96/x
  3. Step 3: Cross multiply
    21,169.92x = 31,745.60 × 11,306.96
  4. Step 4: Simplify right side
    21,169.92x = 358,946,229.38
  5. Step 5: Solve for x
    x = 358,946,229.38/21,169.92
  6. Step 6: Final answer
    x = 16,955.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.