Home / 21,725.69-29,968.92-12,771.54

Finding the Fourth Proportional to 21,725.69, 29,968.92 and 12,771.54

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Solution

The fourth proportional to 21,725.69, 29,968.92 and 12,771.54 is: 17,617.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,725.69 : 29,968.92 = 12,771.54 : x
  2. Step 2: Convert to fraction form
    21,725.69/29,968.92 = 12,771.54/x
  3. Step 3: Cross multiply
    21,725.69x = 29,968.92 × 12,771.54
  4. Step 4: Simplify right side
    21,725.69x = 382,749,260.54
  5. Step 5: Solve for x
    x = 382,749,260.54/21,725.69
  6. Step 6: Final answer
    x = 17,617.36

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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.