Home / 13,757.55-18,986.37-7,789.26

Finding the Fourth Proportional to 13,757.55, 18,986.37 and 7,789.26

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Solution

The fourth proportional to 13,757.55, 18,986.37 and 7,789.26 is: 10,749.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,757.55 : 18,986.37 = 7,789.26 : x
  2. Step 2: Convert to fraction form
    13,757.55/18,986.37 = 7,789.26/x
  3. Step 3: Cross multiply
    13,757.55x = 18,986.37 × 7,789.26
  4. Step 4: Simplify right side
    13,757.55x = 147,889,814.38
  5. Step 5: Solve for x
    x = 147,889,814.38/13,757.55
  6. Step 6: Final answer
    x = 10,749.72

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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.