Home / 12,989.31-19,486.41-4,226.73

Finding the Fourth Proportional to 12,989.31, 19,486.41 and 4,226.73

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Solution

The fourth proportional to 12,989.31, 19,486.41 and 4,226.73 is: 6,340.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,989.31 : 19,486.41 = 4,226.73 : x
  2. Step 2: Convert to fraction form
    12,989.31/19,486.41 = 4,226.73/x
  3. Step 3: Cross multiply
    12,989.31x = 19,486.41 × 4,226.73
  4. Step 4: Simplify right side
    12,989.31x = 82,363,793.74
  5. Step 5: Solve for x
    x = 82,363,793.74/12,989.31
  6. Step 6: Final answer
    x = 6,340.89

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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.