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Finding the Fourth Proportional to 13,563.15, 20,350.80 and 6,163.80

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Solution

The fourth proportional to 13,563.15, 20,350.80 and 6,163.80 is: 9,248.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,563.15 : 20,350.80 = 6,163.80 : x
  2. Step 2: Convert to fraction form
    13,563.15/20,350.80 = 6,163.80/x
  3. Step 3: Cross multiply
    13,563.15x = 20,350.80 × 6,163.80
  4. Step 4: Simplify right side
    13,563.15x = 125,438,261.04
  5. Step 5: Solve for x
    x = 125,438,261.04/13,563.15
  6. Step 6: Final answer
    x = 9,248.46

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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.