Home / 21,554.52-29,742.82-12,122.88

Finding the Fourth Proportional to 21,554.52, 29,742.82 and 12,122.88

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Solution

The fourth proportional to 21,554.52, 29,742.82 and 12,122.88 is: 16,728.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,554.52 : 29,742.82 = 12,122.88 : x
  2. Step 2: Convert to fraction form
    21,554.52/29,742.82 = 12,122.88/x
  3. Step 3: Cross multiply
    21,554.52x = 29,742.82 × 12,122.88
  4. Step 4: Simplify right side
    21,554.52x = 360,568,637.72
  5. Step 5: Solve for x
    x = 360,568,637.72/21,554.52
  6. Step 6: Final answer
    x = 16,728.21

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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.