Home / 13,192.78-19,787.34-3,331.45

Finding the Fourth Proportional to 13,192.78, 19,787.34 and 3,331.45

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Solution

The fourth proportional to 13,192.78, 19,787.34 and 3,331.45 is: 4,996.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,192.78 : 19,787.34 = 3,331.45 : x
  2. Step 2: Convert to fraction form
    13,192.78/19,787.34 = 3,331.45/x
  3. Step 3: Cross multiply
    13,192.78x = 19,787.34 × 3,331.45
  4. Step 4: Simplify right side
    13,192.78x = 65,920,533.84
  5. Step 5: Solve for x
    x = 65,920,533.84/13,192.78
  6. Step 6: Final answer
    x = 4,996.71

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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.