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Finding the Fourth Proportional to 18,453.99, 27,664.53 and 6,764.48

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Solution

The fourth proportional to 18,453.99, 27,664.53 and 6,764.48 is: 10,140.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,453.99 : 27,664.53 = 6,764.48 : x
  2. Step 2: Convert to fraction form
    18,453.99/27,664.53 = 6,764.48/x
  3. Step 3: Cross multiply
    18,453.99x = 27,664.53 × 6,764.48
  4. Step 4: Simplify right side
    18,453.99x = 187,136,021.57
  5. Step 5: Solve for x
    x = 187,136,021.57/18,453.99
  6. Step 6: Final answer
    x = 10,140.68

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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.