Home / 13,606.15-18,777.77-7,940.44

Finding the Fourth Proportional to 13,606.15, 18,777.77 and 7,940.44

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Solution

The fourth proportional to 13,606.15, 18,777.77 and 7,940.44 is: 10,958.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,606.15 : 18,777.77 = 7,940.44 : x
  2. Step 2: Convert to fraction form
    13,606.15/18,777.77 = 7,940.44/x
  3. Step 3: Cross multiply
    13,606.15x = 18,777.77 × 7,940.44
  4. Step 4: Simplify right side
    13,606.15x = 149,103,728.93
  5. Step 5: Solve for x
    x = 149,103,728.93/13,606.15
  6. Step 6: Final answer
    x = 10,958.56

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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.