Home / 12,641.35-18,961.96-3,280.58

Finding the Fourth Proportional to 12,641.35, 18,961.96 and 3,280.58

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Solution

The fourth proportional to 12,641.35, 18,961.96 and 3,280.58 is: 4,920.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,641.35 : 18,961.96 = 3,280.58 : x
  2. Step 2: Convert to fraction form
    12,641.35/18,961.96 = 3,280.58/x
  3. Step 3: Cross multiply
    12,641.35x = 18,961.96 × 3,280.58
  4. Step 4: Simplify right side
    12,641.35x = 62,206,226.74
  5. Step 5: Solve for x
    x = 62,206,226.74/12,641.35
  6. Step 6: Final answer
    x = 4,920.85

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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.