Home / 21,568.97-29,765.16-12,137.51

Finding the Fourth Proportional to 21,568.97, 29,765.16 and 12,137.51

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Solution

The fourth proportional to 21,568.97, 29,765.16 and 12,137.51 is: 16,749.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,568.97 : 29,765.16 = 12,137.51 : x
  2. Step 2: Convert to fraction form
    21,568.97/29,765.16 = 12,137.51/x
  3. Step 3: Cross multiply
    21,568.97x = 29,765.16 × 12,137.51
  4. Step 4: Simplify right side
    21,568.97x = 361,274,778.33
  5. Step 5: Solve for x
    x = 361,274,778.33/21,568.97
  6. Step 6: Final answer
    x = 16,749.75

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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.