Home / 20,950.62-28,912.42-11,391.14

Finding the Fourth Proportional to 20,950.62, 28,912.42 and 11,391.14

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Solution

The fourth proportional to 20,950.62, 28,912.42 and 11,391.14 is: 15,720.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,950.62 : 28,912.42 = 11,391.14 : x
  2. Step 2: Convert to fraction form
    20,950.62/28,912.42 = 11,391.14/x
  3. Step 3: Cross multiply
    20,950.62x = 28,912.42 × 11,391.14
  4. Step 4: Simplify right side
    20,950.62x = 329,345,423.96
  5. Step 5: Solve for x
    x = 329,345,423.96/20,950.62
  6. Step 6: Final answer
    x = 15,720.08

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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.