Home / 20,384.25-28,103.94-13,201.41

Finding the Fourth Proportional to 20,384.25, 28,103.94 and 13,201.41

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Solution

The fourth proportional to 20,384.25, 28,103.94 and 13,201.41 is: 18,200.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,384.25 : 28,103.94 = 13,201.41 : x
  2. Step 2: Convert to fraction form
    20,384.25/28,103.94 = 13,201.41/x
  3. Step 3: Cross multiply
    20,384.25x = 28,103.94 × 13,201.41
  4. Step 4: Simplify right side
    20,384.25x = 371,011,634.56
  5. Step 5: Solve for x
    x = 371,011,634.56/20,384.25
  6. Step 6: Final answer
    x = 18,200.90

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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.