Home / 39,650.36-54,718.20-21,745.20

Finding the Fourth Proportional to 39,650.36, 54,718.20 and 21,745.20

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Solution

The fourth proportional to 39,650.36, 54,718.20 and 21,745.20 is: 30,008.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,650.36 : 54,718.20 = 21,745.20 : x
  2. Step 2: Convert to fraction form
    39,650.36/54,718.20 = 21,745.20/x
  3. Step 3: Cross multiply
    39,650.36x = 54,718.20 × 21,745.20
  4. Step 4: Simplify right side
    39,650.36x = 1,189,858,407.83
  5. Step 5: Solve for x
    x = 1,189,858,407.83/39,650.36
  6. Step 6: Final answer
    x = 30,008.77

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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.