Home / 16,991.36-25,487.24-5,145.21

Finding the Fourth Proportional to 16,991.36, 25,487.24 and 5,145.21

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Solution

The fourth proportional to 16,991.36, 25,487.24 and 5,145.21 is: 7,717.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,991.36 : 25,487.24 = 5,145.21 : x
  2. Step 2: Convert to fraction form
    16,991.36/25,487.24 = 5,145.21/x
  3. Step 3: Cross multiply
    16,991.36x = 25,487.24 × 5,145.21
  4. Step 4: Simplify right side
    16,991.36x = 131,137,202.12
  5. Step 5: Solve for x
    x = 131,137,202.12/16,991.36
  6. Step 6: Final answer
    x = 7,717.88

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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.