Home / 13,768.98-20,674.53-12,139.26

Finding the Fourth Proportional to 13,768.98, 20,674.53 and 12,139.26

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Solution

The fourth proportional to 13,768.98, 20,674.53 and 12,139.26 is: 18,227.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,768.98 : 20,674.53 = 12,139.26 : x
  2. Step 2: Convert to fraction form
    13,768.98/20,674.53 = 12,139.26/x
  3. Step 3: Cross multiply
    13,768.98x = 20,674.53 × 12,139.26
  4. Step 4: Simplify right side
    13,768.98x = 250,973,495.05
  5. Step 5: Solve for x
    x = 250,973,495.05/13,768.98
  6. Step 6: Final answer
    x = 18,227.46

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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.