Home / 39,651.27-54,719.51-21,745.20

Finding the Fourth Proportional to 39,651.27, 54,719.51 and 21,745.20

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Solution

The fourth proportional to 39,651.27, 54,719.51 and 21,745.20 is: 30,008.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,651.27 : 54,719.51 = 21,745.20 : x
  2. Step 2: Convert to fraction form
    39,651.27/54,719.51 = 21,745.20/x
  3. Step 3: Cross multiply
    39,651.27x = 54,719.51 × 21,745.20
  4. Step 4: Simplify right side
    39,651.27x = 1,189,886,688.85
  5. Step 5: Solve for x
    x = 1,189,886,688.85/39,651.27
  6. Step 6: Final answer
    x = 30,008.79

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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.