Home / 22,621.26-31,217.32-13,188

Finding the Fourth Proportional to 22,621.26, 31,217.32 and 13,188

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Solution

The fourth proportional to 22,621.26, 31,217.32 and 13,188 is: 18,199.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,621.26 : 31,217.32 = 13,188 : x
  2. Step 2: Convert to fraction form
    22,621.26/31,217.32 = 13,188/x
  3. Step 3: Cross multiply
    22,621.26x = 31,217.32 × 13,188
  4. Step 4: Simplify right side
    22,621.26x = 411,694,016.16
  5. Step 5: Solve for x
    x = 411,694,016.16/22,621.26
  6. Step 6: Final answer
    x = 18,199.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.