Home / 13,138.12-19,715.82-6,208.84

Finding the Fourth Proportional to 13,138.12, 19,715.82 and 6,208.84

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Solution

The fourth proportional to 13,138.12, 19,715.82 and 6,208.84 is: 9,317.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,138.12 : 19,715.82 = 6,208.84 : x
  2. Step 2: Convert to fraction form
    13,138.12/19,715.82 = 6,208.84/x
  3. Step 3: Cross multiply
    13,138.12x = 19,715.82 × 6,208.84
  4. Step 4: Simplify right side
    13,138.12x = 122,412,371.85
  5. Step 5: Solve for x
    x = 122,412,371.85/13,138.12
  6. Step 6: Final answer
    x = 9,317.34

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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.