Home / 38,514.88-53,145.28-21,517.04

Finding the Fourth Proportional to 38,514.88, 53,145.28 and 21,517.04

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Solution

The fourth proportional to 38,514.88, 53,145.28 and 21,517.04 is: 29,690.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,514.88 : 53,145.28 = 21,517.04 : x
  2. Step 2: Convert to fraction form
    38,514.88/53,145.28 = 21,517.04/x
  3. Step 3: Cross multiply
    38,514.88x = 53,145.28 × 21,517.04
  4. Step 4: Simplify right side
    38,514.88x = 1,143,529,115.57
  5. Step 5: Solve for x
    x = 1,143,529,115.57/38,514.88
  6. Step 6: Final answer
    x = 29,690.58

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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.