Home / 13,975.98-20,956.40-6,940.54

Finding the Fourth Proportional to 13,975.98, 20,956.40 and 6,940.54

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Solution

The fourth proportional to 13,975.98, 20,956.40 and 6,940.54 is: 10,407.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,975.98 : 20,956.40 = 6,940.54 : x
  2. Step 2: Convert to fraction form
    13,975.98/20,956.40 = 6,940.54/x
  3. Step 3: Cross multiply
    13,975.98x = 20,956.40 × 6,940.54
  4. Step 4: Simplify right side
    13,975.98x = 145,448,732.46
  5. Step 5: Solve for x
    x = 145,448,732.46/13,975.98
  6. Step 6: Final answer
    x = 10,407.05

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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.