Home / 12,431.41-18,644.41-4,109.46

Finding the Fourth Proportional to 12,431.41, 18,644.41 and 4,109.46

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Solution

The fourth proportional to 12,431.41, 18,644.41 and 4,109.46 is: 6,163.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,431.41 : 18,644.41 = 4,109.46 : x
  2. Step 2: Convert to fraction form
    12,431.41/18,644.41 = 4,109.46/x
  3. Step 3: Cross multiply
    12,431.41x = 18,644.41 × 4,109.46
  4. Step 4: Simplify right side
    12,431.41x = 76,618,457.12
  5. Step 5: Solve for x
    x = 76,618,457.12/12,431.41
  6. Step 6: Final answer
    x = 6,163.30

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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.