Home / 39,289.38-54,218.49-21,383.94

Finding the Fourth Proportional to 39,289.38, 54,218.49 and 21,383.94

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Solution

The fourth proportional to 39,289.38, 54,218.49 and 21,383.94 is: 29,509.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,289.38 : 54,218.49 = 21,383.94 : x
  2. Step 2: Convert to fraction form
    39,289.38/54,218.49 = 21,383.94/x
  3. Step 3: Cross multiply
    39,289.38x = 54,218.49 × 21,383.94
  4. Step 4: Simplify right side
    39,289.38x = 1,159,404,937.05
  5. Step 5: Solve for x
    x = 1,159,404,937.05/39,289.38
  6. Step 6: Final answer
    x = 29,509.37

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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.