Home / 12,905.57-19,356.80-3,546.53

Finding the Fourth Proportional to 12,905.57, 19,356.80 and 3,546.53

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Solution

The fourth proportional to 12,905.57, 19,356.80 and 3,546.53 is: 5,319.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,905.57 : 19,356.80 = 3,546.53 : x
  2. Step 2: Convert to fraction form
    12,905.57/19,356.80 = 3,546.53/x
  3. Step 3: Cross multiply
    12,905.57x = 19,356.80 × 3,546.53
  4. Step 4: Simplify right side
    12,905.57x = 68,649,529.16
  5. Step 5: Solve for x
    x = 68,649,529.16/12,905.57
  6. Step 6: Final answer
    x = 5,319.37

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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.