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Finding the Fourth Proportional to 13,576.48, 18,735.24 and 7,910.88

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Solution

The fourth proportional to 13,576.48, 18,735.24 and 7,910.88 is: 10,916.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,576.48 : 18,735.24 = 7,910.88 : x
  2. Step 2: Convert to fraction form
    13,576.48/18,735.24 = 7,910.88/x
  3. Step 3: Cross multiply
    13,576.48x = 18,735.24 × 7,910.88
  4. Step 4: Simplify right side
    13,576.48x = 148,212,102.18
  5. Step 5: Solve for x
    x = 148,212,102.18/13,576.48
  6. Step 6: Final answer
    x = 10,916.83

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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.