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Finding the Fourth Proportional to 18,777.99, 28,199.16 and 16,674.36

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Solution

The fourth proportional to 18,777.99, 28,199.16 and 16,674.36 is: 25,040.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,777.99 : 28,199.16 = 16,674.36 : x
  2. Step 2: Convert to fraction form
    18,777.99/28,199.16 = 16,674.36/x
  3. Step 3: Cross multiply
    18,777.99x = 28,199.16 × 16,674.36
  4. Step 4: Simplify right side
    18,777.99x = 470,202,945.54
  5. Step 5: Solve for x
    x = 470,202,945.54/18,777.99
  6. Step 6: Final answer
    x = 25,040.11

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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.