Home / 39,798.23-54,919.39-21,890.34

Finding the Fourth Proportional to 39,798.23, 54,919.39 and 21,890.34

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Solution

The fourth proportional to 39,798.23, 54,919.39 and 21,890.34 is: 30,207.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,798.23 : 54,919.39 = 21,890.34 : x
  2. Step 2: Convert to fraction form
    39,798.23/54,919.39 = 21,890.34/x
  3. Step 3: Cross multiply
    39,798.23x = 54,919.39 × 21,890.34
  4. Step 4: Simplify right side
    39,798.23x = 1,202,204,119.69
  5. Step 5: Solve for x
    x = 1,202,204,119.69/39,798.23
  6. Step 6: Final answer
    x = 30,207.48

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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.