Home / 20,660.49-30,994.73-8,814.06

Finding the Fourth Proportional to 20,660.49, 30,994.73 and 8,814.06

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Solution

The fourth proportional to 20,660.49, 30,994.73 and 8,814.06 is: 13,222.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,660.49 : 30,994.73 = 8,814.06 : x
  2. Step 2: Convert to fraction form
    20,660.49/30,994.73 = 8,814.06/x
  3. Step 3: Cross multiply
    20,660.49x = 30,994.73 × 8,814.06
  4. Step 4: Simplify right side
    20,660.49x = 273,189,365.83
  5. Step 5: Solve for x
    x = 273,189,365.83/20,660.49
  6. Step 6: Final answer
    x = 13,222.79

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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.