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Finding the Fourth Proportional to 13,676.03, 18,872.91 and 7,388.40

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Solution

The fourth proportional to 13,676.03, 18,872.91 and 7,388.40 is: 10,195.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,676.03 : 18,872.91 = 7,388.40 : x
  2. Step 2: Convert to fraction form
    13,676.03/18,872.91 = 7,388.40/x
  3. Step 3: Cross multiply
    13,676.03x = 18,872.91 × 7,388.40
  4. Step 4: Simplify right side
    13,676.03x = 139,440,608.24
  5. Step 5: Solve for x
    x = 139,440,608.24/13,676.03
  6. Step 6: Final answer
    x = 10,195.99

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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.