Home / 13,825.81-20,738.73-3,437.56

Finding the Fourth Proportional to 13,825.81, 20,738.73 and 3,437.56

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Solution

The fourth proportional to 13,825.81, 20,738.73 and 3,437.56 is: 5,156.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,825.81 : 20,738.73 = 3,437.56 : x
  2. Step 2: Convert to fraction form
    13,825.81/20,738.73 = 3,437.56/x
  3. Step 3: Cross multiply
    13,825.81x = 20,738.73 × 3,437.56
  4. Step 4: Simplify right side
    13,825.81x = 71,290,628.70
  5. Step 5: Solve for x
    x = 71,290,628.70/13,825.81
  6. Step 6: Final answer
    x = 5,156.34

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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.