Home / 12,912.84-19,361.46-5,795.78

Finding the Fourth Proportional to 12,912.84, 19,361.46 and 5,795.78

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Solution

The fourth proportional to 12,912.84, 19,361.46 and 5,795.78 is: 8,690.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,912.84 : 19,361.46 = 5,795.78 : x
  2. Step 2: Convert to fraction form
    12,912.84/19,361.46 = 5,795.78/x
  3. Step 3: Cross multiply
    12,912.84x = 19,361.46 × 5,795.78
  4. Step 4: Simplify right side
    12,912.84x = 112,214,762.64
  5. Step 5: Solve for x
    x = 112,214,762.64/12,912.84
  6. Step 6: Final answer
    x = 8,690.17

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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.