Home / 13,889.20-20,835.12-3,893.94

Finding the Fourth Proportional to 13,889.20, 20,835.12 and 3,893.94

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Solution

The fourth proportional to 13,889.20, 20,835.12 and 3,893.94 is: 5,841.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,889.20 : 20,835.12 = 3,893.94 : x
  2. Step 2: Convert to fraction form
    13,889.20/20,835.12 = 3,893.94/x
  3. Step 3: Cross multiply
    13,889.20x = 20,835.12 × 3,893.94
  4. Step 4: Simplify right side
    13,889.20x = 81,130,707.17
  5. Step 5: Solve for x
    x = 81,130,707.17/13,889.20
  6. Step 6: Final answer
    x = 5,841.28

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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.