Home / 13,409.87-18,497.21-8,636.00

Finding the Fourth Proportional to 13,409.87, 18,497.21 and 8,636.00

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Solution

The fourth proportional to 13,409.87, 18,497.21 and 8,636.00 is: 11,912.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,409.87 : 18,497.21 = 8,636.00 : x
  2. Step 2: Convert to fraction form
    13,409.87/18,497.21 = 8,636.00/x
  3. Step 3: Cross multiply
    13,409.87x = 18,497.21 × 8,636.00
  4. Step 4: Simplify right side
    13,409.87x = 159,741,769.89
  5. Step 5: Solve for x
    x = 159,741,769.89/13,409.87
  6. Step 6: Final answer
    x = 11,912.26

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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.