Home / 38,418.75-53,017.88-21,651.75

Finding the Fourth Proportional to 38,418.75, 53,017.88 and 21,651.75

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Solution

The fourth proportional to 38,418.75, 53,017.88 and 21,651.75 is: 29,879.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,418.75 : 53,017.88 = 21,651.75 : x
  2. Step 2: Convert to fraction form
    38,418.75/53,017.88 = 21,651.75/x
  3. Step 3: Cross multiply
    38,418.75x = 53,017.88 × 21,651.75
  4. Step 4: Simplify right side
    38,418.75x = 1,147,929,775.03
  5. Step 5: Solve for x
    x = 1,147,929,775.03/38,418.75
  6. Step 6: Final answer
    x = 29,879.42

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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.