Home / 13,908.09-19,194.56-7,940.68

Finding the Fourth Proportional to 13,908.09, 19,194.56 and 7,940.68

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Solution

The fourth proportional to 13,908.09, 19,194.56 and 7,940.68 is: 10,958.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,908.09 : 19,194.56 = 7,940.68 : x
  2. Step 2: Convert to fraction form
    13,908.09/19,194.56 = 7,940.68/x
  3. Step 3: Cross multiply
    13,908.09x = 19,194.56 × 7,940.68
  4. Step 4: Simplify right side
    13,908.09x = 152,417,858.70
  5. Step 5: Solve for x
    x = 152,417,858.70/13,908.09
  6. Step 6: Final answer
    x = 10,958.94

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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.