Home / 13,912.25-20,871.84-4,051.64

Finding the Fourth Proportional to 13,912.25, 20,871.84 and 4,051.64

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Solution

The fourth proportional to 13,912.25, 20,871.84 and 4,051.64 is: 6,078.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,912.25 : 20,871.84 = 4,051.64 : x
  2. Step 2: Convert to fraction form
    13,912.25/20,871.84 = 4,051.64/x
  3. Step 3: Cross multiply
    13,912.25x = 20,871.84 × 4,051.64
  4. Step 4: Simplify right side
    13,912.25x = 84,565,077.46
  5. Step 5: Solve for x
    x = 84,565,077.46/13,912.25
  6. Step 6: Final answer
    x = 6,078.46

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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.