Home / 20,490.74-30,725.79-11,944.92

Finding the Fourth Proportional to 20,490.74, 30,725.79 and 11,944.92

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Solution

The fourth proportional to 20,490.74, 30,725.79 and 11,944.92 is: 17,911.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,490.74 : 30,725.79 = 11,944.92 : x
  2. Step 2: Convert to fraction form
    20,490.74/30,725.79 = 11,944.92/x
  3. Step 3: Cross multiply
    20,490.74x = 30,725.79 × 11,944.92
  4. Step 4: Simplify right side
    20,490.74x = 367,017,103.49
  5. Step 5: Solve for x
    x = 367,017,103.49/20,490.74
  6. Step 6: Final answer
    x = 17,911.37

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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.