Home / 20,384.22-28,104.18-13,201.44

Finding the Fourth Proportional to 20,384.22, 28,104.18 and 13,201.44

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Solution

The fourth proportional to 20,384.22, 28,104.18 and 13,201.44 is: 18,201.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,384.22 : 28,104.18 = 13,201.44 : x
  2. Step 2: Convert to fraction form
    20,384.22/28,104.18 = 13,201.44/x
  3. Step 3: Cross multiply
    20,384.22x = 28,104.18 × 13,201.44
  4. Step 4: Simplify right side
    20,384.22x = 371,015,588.73
  5. Step 5: Solve for x
    x = 371,015,588.73/20,384.22
  6. Step 6: Final answer
    x = 18,201.12

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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.