Home / 12,879.25-19,331.34-6,220.42

Finding the Fourth Proportional to 12,879.25, 19,331.34 and 6,220.42

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Solution

The fourth proportional to 12,879.25, 19,331.34 and 6,220.42 is: 9,336.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,879.25 : 19,331.34 = 6,220.42 : x
  2. Step 2: Convert to fraction form
    12,879.25/19,331.34 = 6,220.42/x
  3. Step 3: Cross multiply
    12,879.25x = 19,331.34 × 6,220.42
  4. Step 4: Simplify right side
    12,879.25x = 120,249,053.96
  5. Step 5: Solve for x
    x = 120,249,053.96/12,879.25
  6. Step 6: Final answer
    x = 9,336.65

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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.