Home / 13,968.09-19,280.79-8,379.09

Finding the Fourth Proportional to 13,968.09, 19,280.79 and 8,379.09

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Solution

The fourth proportional to 13,968.09, 19,280.79 and 8,379.09 is: 11,566.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,968.09 : 19,280.79 = 8,379.09 : x
  2. Step 2: Convert to fraction form
    13,968.09/19,280.79 = 8,379.09/x
  3. Step 3: Cross multiply
    13,968.09x = 19,280.79 × 8,379.09
  4. Step 4: Simplify right side
    13,968.09x = 161,555,474.68
  5. Step 5: Solve for x
    x = 161,555,474.68/13,968.09
  6. Step 6: Final answer
    x = 11,566.04

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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.