Home / 12,145.54-18,216.79-3,381.14

Finding the Fourth Proportional to 12,145.54, 18,216.79 and 3,381.14

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Solution

The fourth proportional to 12,145.54, 18,216.79 and 3,381.14 is: 5,071.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,145.54 : 18,216.79 = 3,381.14 : x
  2. Step 2: Convert to fraction form
    12,145.54/18,216.79 = 3,381.14/x
  3. Step 3: Cross multiply
    12,145.54x = 18,216.79 × 3,381.14
  4. Step 4: Simplify right side
    12,145.54x = 61,593,517.34
  5. Step 5: Solve for x
    x = 61,593,517.34/12,145.54
  6. Step 6: Final answer
    x = 5,071.29

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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.