Home / 11,826.20-16,318.95-6,789.21

Finding the Fourth Proportional to 11,826.20, 16,318.95 and 6,789.21

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Solution

The fourth proportional to 11,826.20, 16,318.95 and 6,789.21 is: 9,368.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,826.20 : 16,318.95 = 6,789.21 : x
  2. Step 2: Convert to fraction form
    11,826.20/16,318.95 = 6,789.21/x
  3. Step 3: Cross multiply
    11,826.20x = 16,318.95 × 6,789.21
  4. Step 4: Simplify right side
    11,826.20x = 110,792,778.53
  5. Step 5: Solve for x
    x = 110,792,778.53/11,826.20
  6. Step 6: Final answer
    x = 9,368.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.