Home / 19,930.88-29,896.80-8,240.96

Finding the Fourth Proportional to 19,930.88, 29,896.80 and 8,240.96

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Solution

The fourth proportional to 19,930.88, 29,896.80 and 8,240.96 is: 12,361.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,930.88 : 29,896.80 = 8,240.96 : x
  2. Step 2: Convert to fraction form
    19,930.88/29,896.80 = 8,240.96/x
  3. Step 3: Cross multiply
    19,930.88x = 29,896.80 × 8,240.96
  4. Step 4: Simplify right side
    19,930.88x = 246,378,332.93
  5. Step 5: Solve for x
    x = 246,378,332.93/19,930.88
  6. Step 6: Final answer
    x = 12,361.64

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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.