Home / 20,211.50-27,892.14-11,832.86

Finding the Fourth Proportional to 20,211.50, 27,892.14 and 11,832.86

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Solution

The fourth proportional to 20,211.50, 27,892.14 and 11,832.86 is: 16,329.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,211.50 : 27,892.14 = 11,832.86 : x
  2. Step 2: Convert to fraction form
    20,211.50/27,892.14 = 11,832.86/x
  3. Step 3: Cross multiply
    20,211.50x = 27,892.14 × 11,832.86
  4. Step 4: Simplify right side
    20,211.50x = 330,043,787.72
  5. Step 5: Solve for x
    x = 330,043,787.72/20,211.50
  6. Step 6: Final answer
    x = 16,329.50

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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.