Home / 13,113.68-19,676.33-6,872.21

Finding the Fourth Proportional to 13,113.68, 19,676.33 and 6,872.21

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Solution

The fourth proportional to 13,113.68, 19,676.33 and 6,872.21 is: 10,311.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,113.68 : 19,676.33 = 6,872.21 : x
  2. Step 2: Convert to fraction form
    13,113.68/19,676.33 = 6,872.21/x
  3. Step 3: Cross multiply
    13,113.68x = 19,676.33 × 6,872.21
  4. Step 4: Simplify right side
    13,113.68x = 135,219,786.01
  5. Step 5: Solve for x
    x = 135,219,786.01/13,113.68
  6. Step 6: Final answer
    x = 10,311.36

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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.