Home / 12,146.51-18,219.83-3,381.44

Finding the Fourth Proportional to 12,146.51, 18,219.83 and 3,381.44

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Solution

The fourth proportional to 12,146.51, 18,219.83 and 3,381.44 is: 5,072.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,146.51 : 18,219.83 = 3,381.44 : x
  2. Step 2: Convert to fraction form
    12,146.51/18,219.83 = 3,381.44/x
  3. Step 3: Cross multiply
    12,146.51x = 18,219.83 × 3,381.44
  4. Step 4: Simplify right side
    12,146.51x = 61,609,153.95
  5. Step 5: Solve for x
    x = 61,609,153.95/12,146.51
  6. Step 6: Final answer
    x = 5,072.17

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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.