Home / 13,621.99-18,795.48-8,029.75

Finding the Fourth Proportional to 13,621.99, 18,795.48 and 8,029.75

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Solution

The fourth proportional to 13,621.99, 18,795.48 and 8,029.75 is: 11,079.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,621.99 : 18,795.48 = 8,029.75 : x
  2. Step 2: Convert to fraction form
    13,621.99/18,795.48 = 8,029.75/x
  3. Step 3: Cross multiply
    13,621.99x = 18,795.48 × 8,029.75
  4. Step 4: Simplify right side
    13,621.99x = 150,923,005.53
  5. Step 5: Solve for x
    x = 150,923,005.53/13,621.99
  6. Step 6: Final answer
    x = 11,079.37

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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.