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Finding the Fourth Proportional to 12,287.75, 16,957.10 and 6,698.75

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Solution

The fourth proportional to 12,287.75, 16,957.10 and 6,698.75 is: 9,244.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,287.75 : 16,957.10 = 6,698.75 : x
  2. Step 2: Convert to fraction form
    12,287.75/16,957.10 = 6,698.75/x
  3. Step 3: Cross multiply
    12,287.75x = 16,957.10 × 6,698.75
  4. Step 4: Simplify right side
    12,287.75x = 113,591,340.13
  5. Step 5: Solve for x
    x = 113,591,340.13/12,287.75
  6. Step 6: Final answer
    x = 9,244.28

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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.