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Finding the Fourth Proportional to 13,704.95, 20,563.70 and 7,455.60

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Solution

The fourth proportional to 13,704.95, 20,563.70 and 7,455.60 is: 11,186.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,704.95 : 20,563.70 = 7,455.60 : x
  2. Step 2: Convert to fraction form
    13,704.95/20,563.70 = 7,455.60/x
  3. Step 3: Cross multiply
    13,704.95x = 20,563.70 × 7,455.60
  4. Step 4: Simplify right side
    13,704.95x = 153,314,684.44
  5. Step 5: Solve for x
    x = 153,314,684.44/13,704.95
  6. Step 6: Final answer
    x = 11,186.81

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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.