Home / 12,691.99-19,039.26-4,370.90

Finding the Fourth Proportional to 12,691.99, 19,039.26 and 4,370.90

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Solution

The fourth proportional to 12,691.99, 19,039.26 and 4,370.90 is: 6,556.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,691.99 : 19,039.26 = 4,370.90 : x
  2. Step 2: Convert to fraction form
    12,691.99/19,039.26 = 4,370.90/x
  3. Step 3: Cross multiply
    12,691.99x = 19,039.26 × 4,370.90
  4. Step 4: Simplify right side
    12,691.99x = 83,218,679.68
  5. Step 5: Solve for x
    x = 83,218,679.68/12,691.99
  6. Step 6: Final answer
    x = 6,556.79

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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.