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Finding the Fourth Proportional to 13,910.56, 20,869.02 and 4,676.56

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Solution

The fourth proportional to 13,910.56, 20,869.02 and 4,676.56 is: 7,015.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,910.56 : 20,869.02 = 4,676.56 : x
  2. Step 2: Convert to fraction form
    13,910.56/20,869.02 = 4,676.56/x
  3. Step 3: Cross multiply
    13,910.56x = 20,869.02 × 4,676.56
  4. Step 4: Simplify right side
    13,910.56x = 97,595,224.17
  5. Step 5: Solve for x
    x = 97,595,224.17/13,910.56
  6. Step 6: Final answer
    x = 7,015.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.