Home / 19,396.32-29,143.68-12,379.69

Finding the Fourth Proportional to 19,396.32, 29,143.68 and 12,379.69

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Solution

The fourth proportional to 19,396.32, 29,143.68 and 12,379.69 is: 18,600.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,396.32 : 29,143.68 = 12,379.69 : x
  2. Step 2: Convert to fraction form
    19,396.32/29,143.68 = 12,379.69/x
  3. Step 3: Cross multiply
    19,396.32x = 29,143.68 × 12,379.69
  4. Step 4: Simplify right side
    19,396.32x = 360,789,723.86
  5. Step 5: Solve for x
    x = 360,789,723.86/19,396.32
  6. Step 6: Final answer
    x = 18,600.94

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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.