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Finding the Fourth Proportional to 18,736.71, 28,107.81 and 7,052.64

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Solution

The fourth proportional to 18,736.71, 28,107.81 and 7,052.64 is: 10,579.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,736.71 : 28,107.81 = 7,052.64 : x
  2. Step 2: Convert to fraction form
    18,736.71/28,107.81 = 7,052.64/x
  3. Step 3: Cross multiply
    18,736.71x = 28,107.81 × 7,052.64
  4. Step 4: Simplify right side
    18,736.71x = 198,234,265.12
  5. Step 5: Solve for x
    x = 198,234,265.12/18,736.71
  6. Step 6: Final answer
    x = 10,579.99

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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.