Home / 12,705.66-19,058.70-3,940.56

Finding the Fourth Proportional to 12,705.66, 19,058.70 and 3,940.56

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Solution

The fourth proportional to 12,705.66, 19,058.70 and 3,940.56 is: 5,910.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,705.66 : 19,058.70 = 3,940.56 : x
  2. Step 2: Convert to fraction form
    12,705.66/19,058.70 = 3,940.56/x
  3. Step 3: Cross multiply
    12,705.66x = 19,058.70 × 3,940.56
  4. Step 4: Simplify right side
    12,705.66x = 75,101,950.87
  5. Step 5: Solve for x
    x = 75,101,950.87/12,705.66
  6. Step 6: Final answer
    x = 5,910.91

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1.5x scale

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.