Home / 12,428.96-18,641.84-3,664.80

Finding the Fourth Proportional to 12,428.96, 18,641.84 and 3,664.80

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Solution

The fourth proportional to 12,428.96, 18,641.84 and 3,664.80 is: 5,496.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,428.96 : 18,641.84 = 3,664.80 : x
  2. Step 2: Convert to fraction form
    12,428.96/18,641.84 = 3,664.80/x
  3. Step 3: Cross multiply
    12,428.96x = 18,641.84 × 3,664.80
  4. Step 4: Simplify right side
    12,428.96x = 68,318,615.23
  5. Step 5: Solve for x
    x = 68,318,615.23/12,428.96
  6. Step 6: Final answer
    x = 5,496.73

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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.