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Finding the Fourth Proportional to 12,217.70, 16,860.83 and 6,912.41

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Solution

The fourth proportional to 12,217.70, 16,860.83 and 6,912.41 is: 9,539.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,217.70 : 16,860.83 = 6,912.41 : x
  2. Step 2: Convert to fraction form
    12,217.70/16,860.83 = 6,912.41/x
  3. Step 3: Cross multiply
    12,217.70x = 16,860.83 × 6,912.41
  4. Step 4: Simplify right side
    12,217.70x = 116,548,851.03
  5. Step 5: Solve for x
    x = 116,548,851.03/12,217.70
  6. Step 6: Final answer
    x = 9,539.34

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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.