Home / 18,788.55-28,183.09-6,138.24

Finding the Fourth Proportional to 18,788.55, 28,183.09 and 6,138.24

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Solution

The fourth proportional to 18,788.55, 28,183.09 and 6,138.24 is: 9,207.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,788.55 : 28,183.09 = 6,138.24 : x
  2. Step 2: Convert to fraction form
    18,788.55/28,183.09 = 6,138.24/x
  3. Step 3: Cross multiply
    18,788.55x = 28,183.09 × 6,138.24
  4. Step 4: Simplify right side
    18,788.55x = 172,994,570.36
  5. Step 5: Solve for x
    x = 172,994,570.36/18,788.55
  6. Step 6: Final answer
    x = 9,207.45

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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.