Home / 13,819.85-20,713.37-7,964.36

Finding the Fourth Proportional to 13,819.85, 20,713.37 and 7,964.36

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Solution

The fourth proportional to 13,819.85, 20,713.37 and 7,964.36 is: 11,937.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,819.85 : 20,713.37 = 7,964.36 : x
  2. Step 2: Convert to fraction form
    13,819.85/20,713.37 = 7,964.36/x
  3. Step 3: Cross multiply
    13,819.85x = 20,713.37 × 7,964.36
  4. Step 4: Simplify right side
    13,819.85x = 164,968,714.58
  5. Step 5: Solve for x
    x = 164,968,714.58/13,819.85
  6. Step 6: Final answer
    x = 11,937.09

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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.