Home / 12,922.20-19,377.78-4,911.72

Finding the Fourth Proportional to 12,922.20, 19,377.78 and 4,911.72

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Solution

The fourth proportional to 12,922.20, 19,377.78 and 4,911.72 is: 7,365.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,922.20 : 19,377.78 = 4,911.72 : x
  2. Step 2: Convert to fraction form
    12,922.20/19,377.78 = 4,911.72/x
  3. Step 3: Cross multiply
    12,922.20x = 19,377.78 × 4,911.72
  4. Step 4: Simplify right side
    12,922.20x = 95,178,229.58
  5. Step 5: Solve for x
    x = 95,178,229.58/12,922.20
  6. Step 6: Final answer
    x = 7,365.48

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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.