Home / 12,912.06-19,368.10-3,678.06

Finding the Fourth Proportional to 12,912.06, 19,368.10 and 3,678.06

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Solution

The fourth proportional to 12,912.06, 19,368.10 and 3,678.06 is: 5,517.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,912.06 : 19,368.10 = 3,678.06 : x
  2. Step 2: Convert to fraction form
    12,912.06/19,368.10 = 3,678.06/x
  3. Step 3: Cross multiply
    12,912.06x = 19,368.10 × 3,678.06
  4. Step 4: Simplify right side
    12,912.06x = 71,237,033.89
  5. Step 5: Solve for x
    x = 71,237,033.89/12,912.06
  6. Step 6: Final answer
    x = 5,517.09

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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.