Home / 13,208.69-19,795.20-6,639.59

Finding the Fourth Proportional to 13,208.69, 19,795.20 and 6,639.59

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Solution

The fourth proportional to 13,208.69, 19,795.20 and 6,639.59 is: 9,950.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,208.69 : 19,795.20 = 6,639.59 : x
  2. Step 2: Convert to fraction form
    13,208.69/19,795.20 = 6,639.59/x
  3. Step 3: Cross multiply
    13,208.69x = 19,795.20 × 6,639.59
  4. Step 4: Simplify right side
    13,208.69x = 131,431,912.99
  5. Step 5: Solve for x
    x = 131,431,912.99/13,208.69
  6. Step 6: Final answer
    x = 9,950.42

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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.