Home / 12,083.31-18,125.21-3,318.99

Finding the Fourth Proportional to 12,083.31, 18,125.21 and 3,318.99

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Solution

The fourth proportional to 12,083.31, 18,125.21 and 3,318.99 is: 4,978.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,083.31 : 18,125.21 = 3,318.99 : x
  2. Step 2: Convert to fraction form
    12,083.31/18,125.21 = 3,318.99/x
  3. Step 3: Cross multiply
    12,083.31x = 18,125.21 × 3,318.99
  4. Step 4: Simplify right side
    12,083.31x = 60,157,374.14
  5. Step 5: Solve for x
    x = 60,157,374.14/12,083.31
  6. Step 6: Final answer
    x = 4,978.55

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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.