Home / 20,954.50-28,917.24-11,522.86

Finding the Fourth Proportional to 20,954.50, 28,917.24 and 11,522.86

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Solution

The fourth proportional to 20,954.50, 28,917.24 and 11,522.86 is: 15,901.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,954.50 : 28,917.24 = 11,522.86 : x
  2. Step 2: Convert to fraction form
    20,954.50/28,917.24 = 11,522.86/x
  3. Step 3: Cross multiply
    20,954.50x = 28,917.24 × 11,522.86
  4. Step 4: Simplify right side
    20,954.50x = 333,209,308.11
  5. Step 5: Solve for x
    x = 333,209,308.11/20,954.50
  6. Step 6: Final answer
    x = 15,901.56

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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.