Home / 13,750.37-18,975.79-7,782.03

Finding the Fourth Proportional to 13,750.37, 18,975.79 and 7,782.03

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Solution

The fourth proportional to 13,750.37, 18,975.79 and 7,782.03 is: 10,739.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,750.37 : 18,975.79 = 7,782.03 : x
  2. Step 2: Convert to fraction form
    13,750.37/18,975.79 = 7,782.03/x
  3. Step 3: Cross multiply
    13,750.37x = 18,975.79 × 7,782.03
  4. Step 4: Simplify right side
    13,750.37x = 147,670,167.05
  5. Step 5: Solve for x
    x = 147,670,167.05/13,750.37
  6. Step 6: Final answer
    x = 10,739.36

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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.