Home / 10,902.38-16,356-3,111.26

Finding the Fourth Proportional to 10,902.38, 16,356 and 3,111.26

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Solution

The fourth proportional to 10,902.38, 16,356 and 3,111.26 is: 4,667.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,902.38 : 16,356 = 3,111.26 : x
  2. Step 2: Convert to fraction form
    10,902.38/16,356 = 3,111.26/x
  3. Step 3: Cross multiply
    10,902.38x = 16,356 × 3,111.26
  4. Step 4: Simplify right side
    10,902.38x = 50,887,768.56
  5. Step 5: Solve for x
    x = 50,887,768.56/10,902.38
  6. Step 6: Final answer
    x = 4,667.58

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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.