Home / 20,958.11-28,921.71-11,526.83

Finding the Fourth Proportional to 20,958.11, 28,921.71 and 11,526.83

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Solution

The fourth proportional to 20,958.11, 28,921.71 and 11,526.83 is: 15,906.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,958.11 : 28,921.71 = 11,526.83 : x
  2. Step 2: Convert to fraction form
    20,958.11/28,921.71 = 11,526.83/x
  3. Step 3: Cross multiply
    20,958.11x = 28,921.71 × 11,526.83
  4. Step 4: Simplify right side
    20,958.11x = 333,375,432.24
  5. Step 5: Solve for x
    x = 333,375,432.24/20,958.11
  6. Step 6: Final answer
    x = 15,906.75

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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.