Home / 12,015.70-18,020.79-3,251.29

Finding the Fourth Proportional to 12,015.70, 18,020.79 and 3,251.29

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Solution

The fourth proportional to 12,015.70, 18,020.79 and 3,251.29 is: 4,876.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,015.70 : 18,020.79 = 3,251.29 : x
  2. Step 2: Convert to fraction form
    12,015.70/18,020.79 = 3,251.29/x
  3. Step 3: Cross multiply
    12,015.70x = 18,020.79 × 3,251.29
  4. Step 4: Simplify right side
    12,015.70x = 58,590,814.32
  5. Step 5: Solve for x
    x = 58,590,814.32/12,015.70
  6. Step 6: Final answer
    x = 4,876.19

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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.