Home / 12,795.78-19,192.32-3,436.78

Finding the Fourth Proportional to 12,795.78, 19,192.32 and 3,436.78

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Solution

The fourth proportional to 12,795.78, 19,192.32 and 3,436.78 is: 5,154.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,795.78 : 19,192.32 = 3,436.78 : x
  2. Step 2: Convert to fraction form
    12,795.78/19,192.32 = 3,436.78/x
  3. Step 3: Cross multiply
    12,795.78x = 19,192.32 × 3,436.78
  4. Step 4: Simplify right side
    12,795.78x = 65,959,781.53
  5. Step 5: Solve for x
    x = 65,959,781.53/12,795.78
  6. Step 6: Final answer
    x = 5,154.81

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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.