Home / 39,644.36-54,709.29-21,739.24

Finding the Fourth Proportional to 39,644.36, 54,709.29 and 21,739.24

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Solution

The fourth proportional to 39,644.36, 54,709.29 and 21,739.24 is: 30,000.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,644.36 : 54,709.29 = 21,739.24 : x
  2. Step 2: Convert to fraction form
    39,644.36/54,709.29 = 21,739.24/x
  3. Step 3: Cross multiply
    39,644.36x = 54,709.29 × 21,739.24
  4. Step 4: Simplify right side
    39,644.36x = 1,189,338,385.54
  5. Step 5: Solve for x
    x = 1,189,338,385.54/39,644.36
  6. Step 6: Final answer
    x = 30,000.19

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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.