Home / 13,912.80-19,194.81-7,940.22

Finding the Fourth Proportional to 13,912.80, 19,194.81 and 7,940.22

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Solution

The fourth proportional to 13,912.80, 19,194.81 and 7,940.22 is: 10,954.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,912.80 : 19,194.81 = 7,940.22 : x
  2. Step 2: Convert to fraction form
    13,912.80/19,194.81 = 7,940.22/x
  3. Step 3: Cross multiply
    13,912.80x = 19,194.81 × 7,940.22
  4. Step 4: Simplify right side
    13,912.80x = 152,411,014.26
  5. Step 5: Solve for x
    x = 152,411,014.26/13,912.80
  6. Step 6: Final answer
    x = 10,954.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.