Home / 20,653.89-30,963.41-8,958.30

Finding the Fourth Proportional to 20,653.89, 30,963.41 and 8,958.30

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Solution

The fourth proportional to 20,653.89, 30,963.41 and 8,958.30 is: 13,429.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,653.89 : 30,963.41 = 8,958.30 : x
  2. Step 2: Convert to fraction form
    20,653.89/30,963.41 = 8,958.30/x
  3. Step 3: Cross multiply
    20,653.89x = 30,963.41 × 8,958.30
  4. Step 4: Simplify right side
    20,653.89x = 277,379,515.80
  5. Step 5: Solve for x
    x = 277,379,515.80/20,653.89
  6. Step 6: Final answer
    x = 13,429.89

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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.