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Finding the Fourth Proportional to 13,665.03, 18,861.92 and 8,001.10

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Solution

The fourth proportional to 13,665.03, 18,861.92 and 8,001.10 is: 11,043.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,665.03 : 18,861.92 = 8,001.10 : x
  2. Step 2: Convert to fraction form
    13,665.03/18,861.92 = 8,001.10/x
  3. Step 3: Cross multiply
    13,665.03x = 18,861.92 × 8,001.10
  4. Step 4: Simplify right side
    13,665.03x = 150,916,108.11
  5. Step 5: Solve for x
    x = 150,916,108.11/13,665.03
  6. Step 6: Final answer
    x = 11,043.96

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1.5x scale

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.