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Finding the Fourth Proportional to 13,563.45, 20,365.63 and 11,075.74

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Solution

The fourth proportional to 13,563.45, 20,365.63 and 11,075.74 is: 16,630.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,563.45 : 20,365.63 = 11,075.74 : x
  2. Step 2: Convert to fraction form
    13,563.45/20,365.63 = 11,075.74/x
  3. Step 3: Cross multiply
    13,563.45x = 20,365.63 × 11,075.74
  4. Step 4: Simplify right side
    13,563.45x = 225,564,344.21
  5. Step 5: Solve for x
    x = 225,564,344.21/13,563.45
  6. Step 6: Final answer
    x = 16,630.31

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