Home / 38,539.13-53,183.19-21,542.90

Finding the Fourth Proportional to 38,539.13, 53,183.19 and 21,542.90

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Solution

The fourth proportional to 38,539.13, 53,183.19 and 21,542.90 is: 29,728.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,539.13 : 53,183.19 = 21,542.90 : x
  2. Step 2: Convert to fraction form
    38,539.13/53,183.19 = 21,542.90/x
  3. Step 3: Cross multiply
    38,539.13x = 53,183.19 × 21,542.90
  4. Step 4: Simplify right side
    38,539.13x = 1,145,720,143.85
  5. Step 5: Solve for x
    x = 1,145,720,143.85/38,539.13
  6. Step 6: Final answer
    x = 29,728.75

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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.