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Finding the Fourth Proportional to 13,644.70, 18,828.35 and 7,676.24

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Solution

The fourth proportional to 13,644.70, 18,828.35 and 7,676.24 is: 10,592.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,644.70 : 18,828.35 = 7,676.24 : x
  2. Step 2: Convert to fraction form
    13,644.70/18,828.35 = 7,676.24/x
  3. Step 3: Cross multiply
    13,644.70x = 18,828.35 × 7,676.24
  4. Step 4: Simplify right side
    13,644.70x = 144,530,800.88
  5. Step 5: Solve for x
    x = 144,530,800.88/13,644.70
  6. Step 6: Final answer
    x = 10,592.45

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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.