Home / 21,738.65-29,992.14-15,021.86

Finding the Fourth Proportional to 21,738.65, 29,992.14 and 15,021.86

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Solution

The fourth proportional to 21,738.65, 29,992.14 and 15,021.86 is: 20,725.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,738.65 : 29,992.14 = 15,021.86 : x
  2. Step 2: Convert to fraction form
    21,738.65/29,992.14 = 15,021.86/x
  3. Step 3: Cross multiply
    21,738.65x = 29,992.14 × 15,021.86
  4. Step 4: Simplify right side
    21,738.65x = 450,537,578.22
  5. Step 5: Solve for x
    x = 450,537,578.22/21,738.65
  6. Step 6: Final answer
    x = 20,725.19

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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.