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Finding the Fourth Proportional to 13,914.52, 20,871.92 and 3,526.28

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Solution

The fourth proportional to 13,914.52, 20,871.92 and 3,526.28 is: 5,289.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,914.52 : 20,871.92 = 3,526.28 : x
  2. Step 2: Convert to fraction form
    13,914.52/20,871.92 = 3,526.28/x
  3. Step 3: Cross multiply
    13,914.52x = 20,871.92 × 3,526.28
  4. Step 4: Simplify right side
    13,914.52x = 73,600,234.06
  5. Step 5: Solve for x
    x = 73,600,234.06/13,914.52
  6. Step 6: Final answer
    x = 5,289.46

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1.5x scale

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.