Home / 13,986.37-20,972.98-4,123.71

Finding the Fourth Proportional to 13,986.37, 20,972.98 and 4,123.71

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Solution

The fourth proportional to 13,986.37, 20,972.98 and 4,123.71 is: 6,183.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,986.37 : 20,972.98 = 4,123.71 : x
  2. Step 2: Convert to fraction form
    13,986.37/20,972.98 = 4,123.71/x
  3. Step 3: Cross multiply
    13,986.37x = 20,972.98 × 4,123.71
  4. Step 4: Simplify right side
    13,986.37x = 86,486,469.31
  5. Step 5: Solve for x
    x = 86,486,469.31/13,986.37
  6. Step 6: Final answer
    x = 6,183.62

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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.