Home / 12,921.73-19,370.28-4,150.49

Finding the Fourth Proportional to 12,921.73, 19,370.28 and 4,150.49

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Solution

The fourth proportional to 12,921.73, 19,370.28 and 4,150.49 is: 6,221.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,921.73 : 19,370.28 = 4,150.49 : x
  2. Step 2: Convert to fraction form
    12,921.73/19,370.28 = 4,150.49/x
  3. Step 3: Cross multiply
    12,921.73x = 19,370.28 × 4,150.49
  4. Step 4: Simplify right side
    12,921.73x = 80,396,056.59
  5. Step 5: Solve for x
    x = 80,396,056.59/12,921.73
  6. Step 6: Final answer
    x = 6,221.77

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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.