Home / 13,972-19,269.84-8,379.04

Finding the Fourth Proportional to 13,972, 19,269.84 and 8,379.04

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Solution

The fourth proportional to 13,972, 19,269.84 and 8,379.04 is: 11,556.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,972 : 19,269.84 = 8,379.04 : x
  2. Step 2: Convert to fraction form
    13,972/19,269.84 = 8,379.04/x
  3. Step 3: Cross multiply
    13,972x = 19,269.84 × 8,379.04
  4. Step 4: Simplify right side
    13,972x = 161,462,760.15
  5. Step 5: Solve for x
    x = 161,462,760.15/13,972
  6. Step 6: Final answer
    x = 11,556.17

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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.