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Finding the Fourth Proportional to 16,297.78, 22,490.88 and 8,845.78

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Solution

The fourth proportional to 16,297.78, 22,490.88 and 8,845.78 is: 12,207.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,297.78 : 22,490.88 = 8,845.78 : x
  2. Step 2: Convert to fraction form
    16,297.78/22,490.88 = 8,845.78/x
  3. Step 3: Cross multiply
    16,297.78x = 22,490.88 × 8,845.78
  4. Step 4: Simplify right side
    16,297.78x = 198,949,376.49
  5. Step 5: Solve for x
    x = 198,949,376.49/16,297.78
  6. Step 6: Final answer
    x = 12,207.15

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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.