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Finding the Fourth Proportional to 38,497.64, 57,782.79 and 19,790.82

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Solution

The fourth proportional to 38,497.64, 57,782.79 and 19,790.82 is: 29,704.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,497.64 : 57,782.79 = 19,790.82 : x
  2. Step 2: Convert to fraction form
    38,497.64/57,782.79 = 19,790.82/x
  3. Step 3: Cross multiply
    38,497.64x = 57,782.79 × 19,790.82
  4. Step 4: Simplify right side
    38,497.64x = 1,143,568,795.99
  5. Step 5: Solve for x
    x = 1,143,568,795.99/38,497.64
  6. Step 6: Final answer
    x = 29,704.91

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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.