Home / 39,673.05-54,749.70-21,768

Finding the Fourth Proportional to 39,673.05, 54,749.70 and 21,768

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Solution

The fourth proportional to 39,673.05, 54,749.70 and 21,768 is: 30,040.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,673.05 : 54,749.70 = 21,768 : x
  2. Step 2: Convert to fraction form
    39,673.05/54,749.70 = 21,768/x
  3. Step 3: Cross multiply
    39,673.05x = 54,749.70 × 21,768
  4. Step 4: Simplify right side
    39,673.05x = 1,191,791,469.60
  5. Step 5: Solve for x
    x = 1,191,791,469.60/39,673.05
  6. Step 6: Final answer
    x = 30,040.33

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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.