Home / 12,775.38-19,165.96-3,891.51

Finding the Fourth Proportional to 12,775.38, 19,165.96 and 3,891.51

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Solution

The fourth proportional to 12,775.38, 19,165.96 and 3,891.51 is: 5,838.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,775.38 : 19,165.96 = 3,891.51 : x
  2. Step 2: Convert to fraction form
    12,775.38/19,165.96 = 3,891.51/x
  3. Step 3: Cross multiply
    12,775.38x = 19,165.96 × 3,891.51
  4. Step 4: Simplify right side
    12,775.38x = 74,584,467.36
  5. Step 5: Solve for x
    x = 74,584,467.36/12,775.38
  6. Step 6: Final answer
    x = 5,838.14

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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.