Home / 12,709.20-19,063.66-5,211.09

Finding the Fourth Proportional to 12,709.20, 19,063.66 and 5,211.09

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Solution

The fourth proportional to 12,709.20, 19,063.66 and 5,211.09 is: 7,816.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,709.20 : 19,063.66 = 5,211.09 : x
  2. Step 2: Convert to fraction form
    12,709.20/19,063.66 = 5,211.09/x
  3. Step 3: Cross multiply
    12,709.20x = 19,063.66 × 5,211.09
  4. Step 4: Simplify right side
    12,709.20x = 99,342,447.99
  5. Step 5: Solve for x
    x = 99,342,447.99/12,709.20
  6. Step 6: Final answer
    x = 7,816.58

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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.