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Finding the Fourth Proportional to 15,183.71, 20,952.61 and 8,809.81

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Solution

The fourth proportional to 15,183.71, 20,952.61 and 8,809.81 is: 12,157.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,183.71 : 20,952.61 = 8,809.81 : x
  2. Step 2: Convert to fraction form
    15,183.71/20,952.61 = 8,809.81/x
  3. Step 3: Cross multiply
    15,183.71x = 20,952.61 × 8,809.81
  4. Step 4: Simplify right side
    15,183.71x = 184,588,488.25
  5. Step 5: Solve for x
    x = 184,588,488.25/15,183.71
  6. Step 6: Final answer
    x = 12,157.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.