Home / 12,665.24-18,997.86-3,305.23

Finding the Fourth Proportional to 12,665.24, 18,997.86 and 3,305.23

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Solution

The fourth proportional to 12,665.24, 18,997.86 and 3,305.23 is: 4,957.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,665.24 : 18,997.86 = 3,305.23 : x
  2. Step 2: Convert to fraction form
    12,665.24/18,997.86 = 3,305.23/x
  3. Step 3: Cross multiply
    12,665.24x = 18,997.86 × 3,305.23
  4. Step 4: Simplify right side
    12,665.24x = 62,792,332.95
  5. Step 5: Solve for x
    x = 62,792,332.95/12,665.24
  6. Step 6: Final answer
    x = 4,957.85

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.