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Finding the Fourth Proportional to 22,324, 30,807.20 and 12,388

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Solution

The fourth proportional to 22,324, 30,807.20 and 12,388 is: 17,095.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,324 : 30,807.20 = 12,388 : x
  2. Step 2: Convert to fraction form
    22,324/30,807.20 = 12,388/x
  3. Step 3: Cross multiply
    22,324x = 30,807.20 × 12,388
  4. Step 4: Simplify right side
    22,324x = 381,639,593.60
  5. Step 5: Solve for x
    x = 381,639,593.60/22,324
  6. Step 6: Final answer
    x = 17,095.48

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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.