Home / 12,922.78-19,372.61-6,255.50

Finding the Fourth Proportional to 12,922.78, 19,372.61 and 6,255.50

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Solution

The fourth proportional to 12,922.78, 19,372.61 and 6,255.50 is: 9,377.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,922.78 : 19,372.61 = 6,255.50 : x
  2. Step 2: Convert to fraction form
    12,922.78/19,372.61 = 6,255.50/x
  3. Step 3: Cross multiply
    12,922.78x = 19,372.61 × 6,255.50
  4. Step 4: Simplify right side
    12,922.78x = 121,185,400.10
  5. Step 5: Solve for x
    x = 121,185,400.10/12,922.78
  6. Step 6: Final answer
    x = 9,377.66

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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.