Home / 12,663.14-18,995.92-3,900.56

Finding the Fourth Proportional to 12,663.14, 18,995.92 and 3,900.56

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Solution

The fourth proportional to 12,663.14, 18,995.92 and 3,900.56 is: 5,851.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,663.14 : 18,995.92 = 3,900.56 : x
  2. Step 2: Convert to fraction form
    12,663.14/18,995.92 = 3,900.56/x
  3. Step 3: Cross multiply
    12,663.14x = 18,995.92 × 3,900.56
  4. Step 4: Simplify right side
    12,663.14x = 74,094,620.98
  5. Step 5: Solve for x
    x = 74,094,620.98/12,663.14
  6. Step 6: Final answer
    x = 5,851.21

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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.