Home / 12,317.25-18,478.80-3,997.29

Finding the Fourth Proportional to 12,317.25, 18,478.80 and 3,997.29

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Solution

The fourth proportional to 12,317.25, 18,478.80 and 3,997.29 is: 5,996.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,317.25 : 18,478.80 = 3,997.29 : x
  2. Step 2: Convert to fraction form
    12,317.25/18,478.80 = 3,997.29/x
  3. Step 3: Cross multiply
    12,317.25x = 18,478.80 × 3,997.29
  4. Step 4: Simplify right side
    12,317.25x = 73,865,122.45
  5. Step 5: Solve for x
    x = 73,865,122.45/12,317.25
  6. Step 6: Final answer
    x = 5,996.88

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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.