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Finding the Fourth Proportional to 18,487.99, 27,744.27 and 6,801.21

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Solution

The fourth proportional to 18,487.99, 27,744.27 and 6,801.21 is: 10,206.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,487.99 : 27,744.27 = 6,801.21 : x
  2. Step 2: Convert to fraction form
    18,487.99/27,744.27 = 6,801.21/x
  3. Step 3: Cross multiply
    18,487.99x = 27,744.27 × 6,801.21
  4. Step 4: Simplify right side
    18,487.99x = 188,694,599.81
  5. Step 5: Solve for x
    x = 188,694,599.81/18,487.99
  6. Step 6: Final answer
    x = 10,206.33

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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.