Home / 12,908.84-19,355.46-5,791.78

Finding the Fourth Proportional to 12,908.84, 19,355.46 and 5,791.78

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Solution

The fourth proportional to 12,908.84, 19,355.46 and 5,791.78 is: 8,684.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,908.84 : 19,355.46 = 5,791.78 : x
  2. Step 2: Convert to fraction form
    12,908.84/19,355.46 = 5,791.78/x
  3. Step 3: Cross multiply
    12,908.84x = 19,355.46 × 5,791.78
  4. Step 4: Simplify right side
    12,908.84x = 112,102,566.12
  5. Step 5: Solve for x
    x = 112,102,566.12/12,908.84
  6. Step 6: Final answer
    x = 8,684.17

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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.