Home / 20,308.92-30,453.69-11,877.79

Finding the Fourth Proportional to 20,308.92, 30,453.69 and 11,877.79

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Solution

The fourth proportional to 20,308.92, 30,453.69 and 11,877.79 is: 17,811.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,308.92 : 30,453.69 = 11,877.79 : x
  2. Step 2: Convert to fraction form
    20,308.92/30,453.69 = 11,877.79/x
  3. Step 3: Cross multiply
    20,308.92x = 30,453.69 × 11,877.79
  4. Step 4: Simplify right side
    20,308.92x = 361,722,534.55
  5. Step 5: Solve for x
    x = 361,722,534.55/20,308.92
  6. Step 6: Final answer
    x = 17,811.02

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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.