Home / 30,220.78-41,704.71-16,791.72

Finding the Fourth Proportional to 30,220.78, 41,704.71 and 16,791.72

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Solution

The fourth proportional to 30,220.78, 41,704.71 and 16,791.72 is: 23,172.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,220.78 : 41,704.71 = 16,791.72 : x
  2. Step 2: Convert to fraction form
    30,220.78/41,704.71 = 16,791.72/x
  3. Step 3: Cross multiply
    30,220.78x = 41,704.71 × 16,791.72
  4. Step 4: Simplify right side
    30,220.78x = 700,293,969.91
  5. Step 5: Solve for x
    x = 700,293,969.91/30,220.78
  6. Step 6: Final answer
    x = 23,172.60

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1.5x scale

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.