Home / 12,912.12-19,368.24-3,552.28

Finding the Fourth Proportional to 12,912.12, 19,368.24 and 3,552.28

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Solution

The fourth proportional to 12,912.12, 19,368.24 and 3,552.28 is: 5,328.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,912.12 : 19,368.24 = 3,552.28 : x
  2. Step 2: Convert to fraction form
    12,912.12/19,368.24 = 3,552.28/x
  3. Step 3: Cross multiply
    12,912.12x = 19,368.24 × 3,552.28
  4. Step 4: Simplify right side
    12,912.12x = 68,801,411.59
  5. Step 5: Solve for x
    x = 68,801,411.59/12,912.12
  6. Step 6: Final answer
    x = 5,328.44

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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.