Home / 12,905.62-19,356.11-3,418.00

Finding the Fourth Proportional to 12,905.62, 19,356.11 and 3,418.00

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Solution

The fourth proportional to 12,905.62, 19,356.11 and 3,418.00 is: 5,126.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,905.62 : 19,356.11 = 3,418.00 : x
  2. Step 2: Convert to fraction form
    12,905.62/19,356.11 = 3,418.00/x
  3. Step 3: Cross multiply
    12,905.62x = 19,356.11 × 3,418.00
  4. Step 4: Simplify right side
    12,905.62x = 66,159,144.13
  5. Step 5: Solve for x
    x = 66,159,144.13/12,905.62
  6. Step 6: Final answer
    x = 5,126.38

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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.