Home / 13,409.06-20,193.89-12,211.97

Finding the Fourth Proportional to 13,409.06, 20,193.89 and 12,211.97

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Solution

The fourth proportional to 13,409.06, 20,193.89 and 12,211.97 is: 18,391.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,409.06 : 20,193.89 = 12,211.97 : x
  2. Step 2: Convert to fraction form
    13,409.06/20,193.89 = 12,211.97/x
  3. Step 3: Cross multiply
    13,409.06x = 20,193.89 × 12,211.97
  4. Step 4: Simplify right side
    13,409.06x = 246,607,260.79
  5. Step 5: Solve for x
    x = 246,607,260.79/13,409.06
  6. Step 6: Final answer
    x = 18,391.09

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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.