Home / 13,739.24-18,960.94-7,771.48

Finding the Fourth Proportional to 13,739.24, 18,960.94 and 7,771.48

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Solution

The fourth proportional to 13,739.24, 18,960.94 and 7,771.48 is: 10,725.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,739.24 : 18,960.94 = 7,771.48 : x
  2. Step 2: Convert to fraction form
    13,739.24/18,960.94 = 7,771.48/x
  3. Step 3: Cross multiply
    13,739.24x = 18,960.94 × 7,771.48
  4. Step 4: Simplify right side
    13,739.24x = 147,354,565.99
  5. Step 5: Solve for x
    x = 147,354,565.99/13,739.24
  6. Step 6: Final answer
    x = 10,725.09

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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.