Home / 13,783.25-20,672.13-3,922.61

Finding the Fourth Proportional to 13,783.25, 20,672.13 and 3,922.61

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Solution

The fourth proportional to 13,783.25, 20,672.13 and 3,922.61 is: 5,883.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,783.25 : 20,672.13 = 3,922.61 : x
  2. Step 2: Convert to fraction form
    13,783.25/20,672.13 = 3,922.61/x
  3. Step 3: Cross multiply
    13,783.25x = 20,672.13 × 3,922.61
  4. Step 4: Simplify right side
    13,783.25x = 81,088,703.86
  5. Step 5: Solve for x
    x = 81,088,703.86/13,783.25
  6. Step 6: Final answer
    x = 5,883.13

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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.