Home / 11,981.19-16,525.25-7,940.71

Finding the Fourth Proportional to 11,981.19, 16,525.25 and 7,940.71

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Solution

The fourth proportional to 11,981.19, 16,525.25 and 7,940.71 is: 10,952.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,981.19 : 16,525.25 = 7,940.71 : x
  2. Step 2: Convert to fraction form
    11,981.19/16,525.25 = 7,940.71/x
  3. Step 3: Cross multiply
    11,981.19x = 16,525.25 × 7,940.71
  4. Step 4: Simplify right side
    11,981.19x = 131,222,228.66
  5. Step 5: Solve for x
    x = 131,222,228.66/11,981.19
  6. Step 6: Final answer
    x = 10,952.35

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Similar ratio
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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.