Home / 14,135.92-21,305.48-12,185.09

Finding the Fourth Proportional to 14,135.92, 21,305.48 and 12,185.09

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Solution

The fourth proportional to 14,135.92, 21,305.48 and 12,185.09 is: 18,365.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,135.92 : 21,305.48 = 12,185.09 : x
  2. Step 2: Convert to fraction form
    14,135.92/21,305.48 = 12,185.09/x
  3. Step 3: Cross multiply
    14,135.92x = 21,305.48 × 12,185.09
  4. Step 4: Simplify right side
    14,135.92x = 259,609,191.29
  5. Step 5: Solve for x
    x = 259,609,191.29/14,135.92
  6. Step 6: Final answer
    x = 18,365.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.