Home / 20,214.89-30,327.79-11,455.95

Finding the Fourth Proportional to 20,214.89, 30,327.79 and 11,455.95

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Solution

The fourth proportional to 20,214.89, 30,327.79 and 11,455.95 is: 17,187.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,214.89 : 30,327.79 = 11,455.95 : x
  2. Step 2: Convert to fraction form
    20,214.89/30,327.79 = 11,455.95/x
  3. Step 3: Cross multiply
    20,214.89x = 30,327.79 × 11,455.95
  4. Step 4: Simplify right side
    20,214.89x = 347,433,645.85
  5. Step 5: Solve for x
    x = 347,433,645.85/20,214.89
  6. Step 6: Final answer
    x = 17,187.02

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1.5x scale

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.