Home / 12,920.36-19,377.97-3,557.95

Finding the Fourth Proportional to 12,920.36, 19,377.97 and 3,557.95

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Solution

The fourth proportional to 12,920.36, 19,377.97 and 3,557.95 is: 5,336.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,920.36 : 19,377.97 = 3,557.95 : x
  2. Step 2: Convert to fraction form
    12,920.36/19,377.97 = 3,557.95/x
  3. Step 3: Cross multiply
    12,920.36x = 19,377.97 × 3,557.95
  4. Step 4: Simplify right side
    12,920.36x = 68,945,791.02
  5. Step 5: Solve for x
    x = 68,945,791.02/12,920.36
  6. Step 6: Final answer
    x = 5,336.21

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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.