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Finding the Fourth Proportional to 13,663.08, 18,854.10 and 8,073

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Solution

The fourth proportional to 13,663.08, 18,854.10 and 8,073 is: 11,140.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,663.08 : 18,854.10 = 8,073 : x
  2. Step 2: Convert to fraction form
    13,663.08/18,854.10 = 8,073/x
  3. Step 3: Cross multiply
    13,663.08x = 18,854.10 × 8,073
  4. Step 4: Simplify right side
    13,663.08x = 152,209,149.30
  5. Step 5: Solve for x
    x = 152,209,149.30/13,663.08
  6. Step 6: Final answer
    x = 11,140.18

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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.