Home / 12,991.39-19,489.11-4,224.25

Finding the Fourth Proportional to 12,991.39, 19,489.11 and 4,224.25

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Solution

The fourth proportional to 12,991.39, 19,489.11 and 4,224.25 is: 6,337.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,991.39 : 19,489.11 = 4,224.25 : x
  2. Step 2: Convert to fraction form
    12,991.39/19,489.11 = 4,224.25/x
  3. Step 3: Cross multiply
    12,991.39x = 19,489.11 × 4,224.25
  4. Step 4: Simplify right side
    12,991.39x = 82,326,881.44
  5. Step 5: Solve for x
    x = 82,326,881.44/12,991.39
  6. Step 6: Final answer
    x = 6,337.04

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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.