Home / 14,288.45-21,418.53-6,778.83

Finding the Fourth Proportional to 14,288.45, 21,418.53 and 6,778.83

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Solution

The fourth proportional to 14,288.45, 21,418.53 and 6,778.83 is: 10,161.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,288.45 : 21,418.53 = 6,778.83 : x
  2. Step 2: Convert to fraction form
    14,288.45/21,418.53 = 6,778.83/x
  3. Step 3: Cross multiply
    14,288.45x = 21,418.53 × 6,778.83
  4. Step 4: Simplify right side
    14,288.45x = 145,192,573.72
  5. Step 5: Solve for x
    x = 145,192,573.72/14,288.45
  6. Step 6: Final answer
    x = 10,161.54

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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.