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Finding the Fourth Proportional to 22,264, 30,724.32 and 12,328

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Solution

The fourth proportional to 22,264, 30,724.32 and 12,328 is: 17,012.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,264 : 30,724.32 = 12,328 : x
  2. Step 2: Convert to fraction form
    22,264/30,724.32 = 12,328/x
  3. Step 3: Cross multiply
    22,264x = 30,724.32 × 12,328
  4. Step 4: Simplify right side
    22,264x = 378,769,416.96
  5. Step 5: Solve for x
    x = 378,769,416.96/22,264
  6. Step 6: Final answer
    x = 17,012.64

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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.