Home / 13,912.23-20,871.78-4,051.59

Finding the Fourth Proportional to 13,912.23, 20,871.78 and 4,051.59

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Solution

The fourth proportional to 13,912.23, 20,871.78 and 4,051.59 is: 6,078.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,912.23 : 20,871.78 = 4,051.59 : x
  2. Step 2: Convert to fraction form
    13,912.23/20,871.78 = 4,051.59/x
  3. Step 3: Cross multiply
    13,912.23x = 20,871.78 × 4,051.59
  4. Step 4: Simplify right side
    13,912.23x = 84,563,977.77
  5. Step 5: Solve for x
    x = 84,563,977.77/13,912.23
  6. Step 6: Final answer
    x = 6,078.39

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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.