Home / 12,879.42-19,320.93-4,111.35

Finding the Fourth Proportional to 12,879.42, 19,320.93 and 4,111.35

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Solution

The fourth proportional to 12,879.42, 19,320.93 and 4,111.35 is: 6,167.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,879.42 : 19,320.93 = 4,111.35 : x
  2. Step 2: Convert to fraction form
    12,879.42/19,320.93 = 4,111.35/x
  3. Step 3: Cross multiply
    12,879.42x = 19,320.93 × 4,111.35
  4. Step 4: Simplify right side
    12,879.42x = 79,435,105.56
  5. Step 5: Solve for x
    x = 79,435,105.56/12,879.42
  6. Step 6: Final answer
    x = 6,167.60

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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.