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Finding the Fourth Proportional to 22,356.64, 30,850.80 and 12,283.12

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Solution

The fourth proportional to 22,356.64, 30,850.80 and 12,283.12 is: 16,949.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,356.64 : 30,850.80 = 12,283.12 : x
  2. Step 2: Convert to fraction form
    22,356.64/30,850.80 = 12,283.12/x
  3. Step 3: Cross multiply
    22,356.64x = 30,850.80 × 12,283.12
  4. Step 4: Simplify right side
    22,356.64x = 378,944,078.50
  5. Step 5: Solve for x
    x = 378,944,078.50/22,356.64
  6. Step 6: Final answer
    x = 16,949.96

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1.5x scale

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.