Home / 14,486.14-19,991.32-8,112.72

Finding the Fourth Proportional to 14,486.14, 19,991.32 and 8,112.72

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Solution

The fourth proportional to 14,486.14, 19,991.32 and 8,112.72 is: 11,195.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,486.14 : 19,991.32 = 8,112.72 : x
  2. Step 2: Convert to fraction form
    14,486.14/19,991.32 = 8,112.72/x
  3. Step 3: Cross multiply
    14,486.14x = 19,991.32 × 8,112.72
  4. Step 4: Simplify right side
    14,486.14x = 162,183,874.42
  5. Step 5: Solve for x
    x = 162,183,874.42/14,486.14
  6. Step 6: Final answer
    x = 11,195.80

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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.