Home / 39,823.92-54,956.59-21,918.55

Finding the Fourth Proportional to 39,823.92, 54,956.59 and 21,918.55

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Solution

The fourth proportional to 39,823.92, 54,956.59 and 21,918.55 is: 30,247.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,823.92 : 54,956.59 = 21,918.55 : x
  2. Step 2: Convert to fraction form
    39,823.92/54,956.59 = 21,918.55/x
  3. Step 3: Cross multiply
    39,823.92x = 54,956.59 × 21,918.55
  4. Step 4: Simplify right side
    39,823.92x = 1,204,568,765.74
  5. Step 5: Solve for x
    x = 1,204,568,765.74/39,823.92
  6. Step 6: Final answer
    x = 30,247.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.