Home / 13,972.25-19,270.19-8,379.29

Finding the Fourth Proportional to 13,972.25, 19,270.19 and 8,379.29

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Solution

The fourth proportional to 13,972.25, 19,270.19 and 8,379.29 is: 11,556.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,972.25 : 19,270.19 = 8,379.29 : x
  2. Step 2: Convert to fraction form
    13,972.25/19,270.19 = 8,379.29/x
  3. Step 3: Cross multiply
    13,972.25x = 19,270.19 × 8,379.29
  4. Step 4: Simplify right side
    13,972.25x = 161,470,468.47
  5. Step 5: Solve for x
    x = 161,470,468.47/13,972.25
  6. Step 6: Final answer
    x = 11,556.51

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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.