Home / 14,474.22-19,979.12-11,128.12

Finding the Fourth Proportional to 14,474.22, 19,979.12 and 11,128.12

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Solution

The fourth proportional to 14,474.22, 19,979.12 and 11,128.12 is: 15,360.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,474.22 : 19,979.12 = 11,128.12 : x
  2. Step 2: Convert to fraction form
    14,474.22/19,979.12 = 11,128.12/x
  3. Step 3: Cross multiply
    14,474.22x = 19,979.12 × 11,128.12
  4. Step 4: Simplify right side
    14,474.22x = 222,330,044.85
  5. Step 5: Solve for x
    x = 222,330,044.85/14,474.22
  6. Step 6: Final answer
    x = 15,360.42

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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.