Home / 21,067.84-29,074.98-12,115.72

Finding the Fourth Proportional to 21,067.84, 29,074.98 and 12,115.72

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Solution

The fourth proportional to 21,067.84, 29,074.98 and 12,115.72 is: 16,720.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,067.84 : 29,074.98 = 12,115.72 : x
  2. Step 2: Convert to fraction form
    21,067.84/29,074.98 = 12,115.72/x
  3. Step 3: Cross multiply
    21,067.84x = 29,074.98 × 12,115.72
  4. Step 4: Simplify right side
    21,067.84x = 352,264,316.69
  5. Step 5: Solve for x
    x = 352,264,316.69/21,067.84
  6. Step 6: Final answer
    x = 16,720.48

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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.