Home / 11,138.33-16,705.62-5,215.83

Finding the Fourth Proportional to 11,138.33, 16,705.62 and 5,215.83

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Solution

The fourth proportional to 11,138.33, 16,705.62 and 5,215.83 is: 7,822.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,138.33 : 16,705.62 = 5,215.83 : x
  2. Step 2: Convert to fraction form
    11,138.33/16,705.62 = 5,215.83/x
  3. Step 3: Cross multiply
    11,138.33x = 16,705.62 × 5,215.83
  4. Step 4: Simplify right side
    11,138.33x = 87,133,673.96
  5. Step 5: Solve for x
    x = 87,133,673.96/11,138.33
  6. Step 6: Final answer
    x = 7,822.87

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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.