Home / 13,647.64-20,467.68-3,786.16

Finding the Fourth Proportional to 13,647.64, 20,467.68 and 3,786.16

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Solution

The fourth proportional to 13,647.64, 20,467.68 and 3,786.16 is: 5,678.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,647.64 : 20,467.68 = 3,786.16 : x
  2. Step 2: Convert to fraction form
    13,647.64/20,467.68 = 3,786.16/x
  3. Step 3: Cross multiply
    13,647.64x = 20,467.68 × 3,786.16
  4. Step 4: Simplify right side
    13,647.64x = 77,493,911.31
  5. Step 5: Solve for x
    x = 77,493,911.31/13,647.64
  6. Step 6: Final answer
    x = 5,678.19

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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.