Home / 12,721.53-19,078.60-4,399.39

Finding the Fourth Proportional to 12,721.53, 19,078.60 and 4,399.39

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Solution

The fourth proportional to 12,721.53, 19,078.60 and 4,399.39 is: 6,597.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,721.53 : 19,078.60 = 4,399.39 : x
  2. Step 2: Convert to fraction form
    12,721.53/19,078.60 = 4,399.39/x
  3. Step 3: Cross multiply
    12,721.53x = 19,078.60 × 4,399.39
  4. Step 4: Simplify right side
    12,721.53x = 83,934,202.05
  5. Step 5: Solve for x
    x = 83,934,202.05/12,721.53
  6. Step 6: Final answer
    x = 6,597.81

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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.