Home / 39,694.71-54,778.48-21,790.02

Finding the Fourth Proportional to 39,694.71, 54,778.48 and 21,790.02

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Solution

The fourth proportional to 39,694.71, 54,778.48 and 21,790.02 is: 30,070.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,694.71 : 54,778.48 = 21,790.02 : x
  2. Step 2: Convert to fraction form
    39,694.71/54,778.48 = 21,790.02/x
  3. Step 3: Cross multiply
    39,694.71x = 54,778.48 × 21,790.02
  4. Step 4: Simplify right side
    39,694.71x = 1,193,624,174.77
  5. Step 5: Solve for x
    x = 1,193,624,174.77/39,694.71
  6. Step 6: Final answer
    x = 30,070.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.