Home / 13,140.48-19,709.44-3,906.56

Finding the Fourth Proportional to 13,140.48, 19,709.44 and 3,906.56

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Solution

The fourth proportional to 13,140.48, 19,709.44 and 3,906.56 is: 5,859.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,140.48 : 19,709.44 = 3,906.56 : x
  2. Step 2: Convert to fraction form
    13,140.48/19,709.44 = 3,906.56/x
  3. Step 3: Cross multiply
    13,140.48x = 19,709.44 × 3,906.56
  4. Step 4: Simplify right side
    13,140.48x = 76,996,109.93
  5. Step 5: Solve for x
    x = 76,996,109.93/13,140.48
  6. Step 6: Final answer
    x = 5,859.46

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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.