Home / 10,486.08-15,728.60-3,911.75

Finding the Fourth Proportional to 10,486.08, 15,728.60 and 3,911.75

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Solution

The fourth proportional to 10,486.08, 15,728.60 and 3,911.75 is: 5,867.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,486.08 : 15,728.60 = 3,911.75 : x
  2. Step 2: Convert to fraction form
    10,486.08/15,728.60 = 3,911.75/x
  3. Step 3: Cross multiply
    10,486.08x = 15,728.60 × 3,911.75
  4. Step 4: Simplify right side
    10,486.08x = 61,526,351.05
  5. Step 5: Solve for x
    x = 61,526,351.05/10,486.08
  6. Step 6: Final answer
    x = 5,867.43

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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.