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Finding the Fourth Proportional to 18,663.85, 27,999.72 and 6,183.16

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Solution

The fourth proportional to 18,663.85, 27,999.72 and 6,183.16 is: 9,276.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,663.85 : 27,999.72 = 6,183.16 : x
  2. Step 2: Convert to fraction form
    18,663.85/27,999.72 = 6,183.16/x
  3. Step 3: Cross multiply
    18,663.85x = 27,999.72 × 6,183.16
  4. Step 4: Simplify right side
    18,663.85x = 173,126,748.72
  5. Step 5: Solve for x
    x = 173,126,748.72/18,663.85
  6. Step 6: Final answer
    x = 9,276.05

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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.