Home / 19,872.16-27,422.22-11,910.40

Finding the Fourth Proportional to 19,872.16, 27,422.22 and 11,910.40

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Solution

The fourth proportional to 19,872.16, 27,422.22 and 11,910.40 is: 16,435.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,872.16 : 27,422.22 = 11,910.40 : x
  2. Step 2: Convert to fraction form
    19,872.16/27,422.22 = 11,910.40/x
  3. Step 3: Cross multiply
    19,872.16x = 27,422.22 × 11,910.40
  4. Step 4: Simplify right side
    19,872.16x = 326,609,609.09
  5. Step 5: Solve for x
    x = 326,609,609.09/19,872.16
  6. Step 6: Final answer
    x = 16,435.54

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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.