Home / 12,991.73-19,489.64-4,224.60

Finding the Fourth Proportional to 12,991.73, 19,489.64 and 4,224.60

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Solution

The fourth proportional to 12,991.73, 19,489.64 and 4,224.60 is: 6,337.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,991.73 : 19,489.64 = 4,224.60 : x
  2. Step 2: Convert to fraction form
    12,991.73/19,489.64 = 4,224.60/x
  3. Step 3: Cross multiply
    12,991.73x = 19,489.64 × 4,224.60
  4. Step 4: Simplify right side
    12,991.73x = 82,335,933.14
  5. Step 5: Solve for x
    x = 82,335,933.14/12,991.73
  6. Step 6: Final answer
    x = 6,337.56

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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.