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Finding the Fourth Proportional to 16,608.64, 22,910.40 and 9,980.80

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Solution

The fourth proportional to 16,608.64, 22,910.40 and 9,980.80 is: 13,767.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,608.64 : 22,910.40 = 9,980.80 : x
  2. Step 2: Convert to fraction form
    16,608.64/22,910.40 = 9,980.80/x
  3. Step 3: Cross multiply
    16,608.64x = 22,910.40 × 9,980.80
  4. Step 4: Simplify right side
    16,608.64x = 228,664,120.32
  5. Step 5: Solve for x
    x = 228,664,120.32/16,608.64
  6. Step 6: Final answer
    x = 13,767.78

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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.