Home / 12,216.54-16,859.85-6,912.38

Finding the Fourth Proportional to 12,216.54, 16,859.85 and 6,912.38

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Solution

The fourth proportional to 12,216.54, 16,859.85 and 6,912.38 is: 9,539.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,216.54 : 16,859.85 = 6,912.38 : x
  2. Step 2: Convert to fraction form
    12,216.54/16,859.85 = 6,912.38/x
  3. Step 3: Cross multiply
    12,216.54x = 16,859.85 × 6,912.38
  4. Step 4: Simplify right side
    12,216.54x = 116,541,605.64
  5. Step 5: Solve for x
    x = 116,541,605.64/12,216.54
  6. Step 6: Final answer
    x = 9,539.66

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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.