Home / 13,307.85-19,958.37-3,945.68

Finding the Fourth Proportional to 13,307.85, 19,958.37 and 3,945.68

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Solution

The fourth proportional to 13,307.85, 19,958.37 and 3,945.68 is: 5,917.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,307.85 : 19,958.37 = 3,945.68 : x
  2. Step 2: Convert to fraction form
    13,307.85/19,958.37 = 3,945.68/x
  3. Step 3: Cross multiply
    13,307.85x = 19,958.37 × 3,945.68
  4. Step 4: Simplify right side
    13,307.85x = 78,749,321.61
  5. Step 5: Solve for x
    x = 78,749,321.61/13,307.85
  6. Step 6: Final answer
    x = 5,917.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.