Home / 12,872.94-19,276.31-8,918.56

Finding the Fourth Proportional to 12,872.94, 19,276.31 and 8,918.56

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Solution

The fourth proportional to 12,872.94, 19,276.31 and 8,918.56 is: 13,354.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,872.94 : 19,276.31 = 8,918.56 : x
  2. Step 2: Convert to fraction form
    12,872.94/19,276.31 = 8,918.56/x
  3. Step 3: Cross multiply
    12,872.94x = 19,276.31 × 8,918.56
  4. Step 4: Simplify right side
    12,872.94x = 171,916,882.72
  5. Step 5: Solve for x
    x = 171,916,882.72/12,872.94
  6. Step 6: Final answer
    x = 13,354.91

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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.