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Finding the Fourth Proportional to 18,741.44, 25,884.44 and 12,762.72

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Solution

The fourth proportional to 18,741.44, 25,884.44 and 12,762.72 is: 17,627.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,741.44 : 25,884.44 = 12,762.72 : x
  2. Step 2: Convert to fraction form
    18,741.44/25,884.44 = 12,762.72/x
  3. Step 3: Cross multiply
    18,741.44x = 25,884.44 × 12,762.72
  4. Step 4: Simplify right side
    18,741.44x = 330,355,796.26
  5. Step 5: Solve for x
    x = 330,355,796.26/18,741.44
  6. Step 6: Final answer
    x = 17,627.03

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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.