Home / 11,861.72-17,803.35-6,319.79

Finding the Fourth Proportional to 11,861.72, 17,803.35 and 6,319.79

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Solution

The fourth proportional to 11,861.72, 17,803.35 and 6,319.79 is: 9,485.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,861.72 : 17,803.35 = 6,319.79 : x
  2. Step 2: Convert to fraction form
    11,861.72/17,803.35 = 6,319.79/x
  3. Step 3: Cross multiply
    11,861.72x = 17,803.35 × 6,319.79
  4. Step 4: Simplify right side
    11,861.72x = 112,513,433.30
  5. Step 5: Solve for x
    x = 112,513,433.30/11,861.72
  6. Step 6: Final answer
    x = 9,485.42

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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.