Home / 39,391.34-54,360.21-21,486.73

Finding the Fourth Proportional to 39,391.34, 54,360.21 and 21,486.73

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Solution

The fourth proportional to 39,391.34, 54,360.21 and 21,486.73 is: 29,651.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,391.34 : 54,360.21 = 21,486.73 : x
  2. Step 2: Convert to fraction form
    39,391.34/54,360.21 = 21,486.73/x
  3. Step 3: Cross multiply
    39,391.34x = 54,360.21 × 21,486.73
  4. Step 4: Simplify right side
    39,391.34x = 1,168,023,155.01
  5. Step 5: Solve for x
    x = 1,168,023,155.01/39,391.34
  6. Step 6: Final answer
    x = 29,651.78

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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.