Home / 12,864.78-19,300.82-6,629.36

Finding the Fourth Proportional to 12,864.78, 19,300.82 and 6,629.36

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Solution

The fourth proportional to 12,864.78, 19,300.82 and 6,629.36 is: 9,945.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,864.78 : 19,300.82 = 6,629.36 : x
  2. Step 2: Convert to fraction form
    12,864.78/19,300.82 = 6,629.36/x
  3. Step 3: Cross multiply
    12,864.78x = 19,300.82 × 6,629.36
  4. Step 4: Simplify right side
    12,864.78x = 127,951,954.42
  5. Step 5: Solve for x
    x = 127,951,954.42/12,864.78
  6. Step 6: Final answer
    x = 9,945.91

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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.