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Finding the Fourth Proportional to 14,311.82, 19,751.51 and 7,940.48

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Solution

The fourth proportional to 14,311.82, 19,751.51 and 7,940.48 is: 10,958.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,311.82 : 19,751.51 = 7,940.48 : x
  2. Step 2: Convert to fraction form
    14,311.82/19,751.51 = 7,940.48/x
  3. Step 3: Cross multiply
    14,311.82x = 19,751.51 × 7,940.48
  4. Step 4: Simplify right side
    14,311.82x = 156,836,331.66
  5. Step 5: Solve for x
    x = 156,836,331.66/14,311.82
  6. Step 6: Final answer
    x = 10,958.52

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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.