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Finding the Fourth Proportional to 18,796.64, 25,880.31 and 15,958.08

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Solution

The fourth proportional to 18,796.64, 25,880.31 and 15,958.08 is: 21,972.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,796.64 : 25,880.31 = 15,958.08 : x
  2. Step 2: Convert to fraction form
    18,796.64/25,880.31 = 15,958.08/x
  3. Step 3: Cross multiply
    18,796.64x = 25,880.31 × 15,958.08
  4. Step 4: Simplify right side
    18,796.64x = 413,000,057.40
  5. Step 5: Solve for x
    x = 413,000,057.40/18,796.64
  6. Step 6: Final answer
    x = 21,972.02

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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.