Home / 39,665.66-54,739.20-21,760.34

Finding the Fourth Proportional to 39,665.66, 54,739.20 and 21,760.34

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Solution

The fourth proportional to 39,665.66, 54,739.20 and 21,760.34 is: 30,029.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,665.66 : 54,739.20 = 21,760.34 : x
  2. Step 2: Convert to fraction form
    39,665.66/54,739.20 = 21,760.34/x
  3. Step 3: Cross multiply
    39,665.66x = 54,739.20 × 21,760.34
  4. Step 4: Simplify right side
    39,665.66x = 1,191,143,603.33
  5. Step 5: Solve for x
    x = 1,191,143,603.33/39,665.66
  6. Step 6: Final answer
    x = 30,029.59

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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.