Home / 20,956.84-31,409.34-10,571.56

Finding the Fourth Proportional to 20,956.84, 31,409.34 and 10,571.56

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Solution

The fourth proportional to 20,956.84, 31,409.34 and 10,571.56 is: 15,844.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,956.84 : 31,409.34 = 10,571.56 : x
  2. Step 2: Convert to fraction form
    20,956.84/31,409.34 = 10,571.56/x
  3. Step 3: Cross multiply
    20,956.84x = 31,409.34 × 10,571.56
  4. Step 4: Simplify right side
    20,956.84x = 332,045,722.37
  5. Step 5: Solve for x
    x = 332,045,722.37/20,956.84
  6. Step 6: Final answer
    x = 15,844.26

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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.