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Finding the Fourth Proportional to 12,201.60, 16,838.28 and 6,612.60

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Solution

The fourth proportional to 12,201.60, 16,838.28 and 6,612.60 is: 9,125.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,201.60 : 16,838.28 = 6,612.60 : x
  2. Step 2: Convert to fraction form
    12,201.60/16,838.28 = 6,612.60/x
  3. Step 3: Cross multiply
    12,201.60x = 16,838.28 × 6,612.60
  4. Step 4: Simplify right side
    12,201.60x = 111,344,810.33
  5. Step 5: Solve for x
    x = 111,344,810.33/12,201.60
  6. Step 6: Final answer
    x = 9,125.43

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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.