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Finding the Fourth Proportional to 20,254.64, 27,965.16 and 12,704.08

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Solution

The fourth proportional to 20,254.64, 27,965.16 and 12,704.08 is: 17,540.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,254.64 : 27,965.16 = 12,704.08 : x
  2. Step 2: Convert to fraction form
    20,254.64/27,965.16 = 12,704.08/x
  3. Step 3: Cross multiply
    20,254.64x = 27,965.16 × 12,704.08
  4. Step 4: Simplify right side
    20,254.64x = 355,271,629.85
  5. Step 5: Solve for x
    x = 355,271,629.85/20,254.64
  6. Step 6: Final answer
    x = 17,540.26

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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.