Home / 13,428.24-20,137.68-4,660.80

Finding the Fourth Proportional to 13,428.24, 20,137.68 and 4,660.80

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Solution

The fourth proportional to 13,428.24, 20,137.68 and 4,660.80 is: 6,989.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,428.24 : 20,137.68 = 4,660.80 : x
  2. Step 2: Convert to fraction form
    13,428.24/20,137.68 = 4,660.80/x
  3. Step 3: Cross multiply
    13,428.24x = 20,137.68 × 4,660.80
  4. Step 4: Simplify right side
    13,428.24x = 93,857,698.94
  5. Step 5: Solve for x
    x = 93,857,698.94/13,428.24
  6. Step 6: Final answer
    x = 6,989.58

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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.