Home / 30,379.90-41,919.23-20,292.16

Finding the Fourth Proportional to 30,379.90, 41,919.23 and 20,292.16

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Solution

The fourth proportional to 30,379.90, 41,919.23 and 20,292.16 is: 27,999.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,379.90 : 41,919.23 = 20,292.16 : x
  2. Step 2: Convert to fraction form
    30,379.90/41,919.23 = 20,292.16/x
  3. Step 3: Cross multiply
    30,379.90x = 41,919.23 × 20,292.16
  4. Step 4: Simplify right side
    30,379.90x = 850,631,411.18
  5. Step 5: Solve for x
    x = 850,631,411.18/30,379.90
  6. Step 6: Final answer
    x = 27,999.81

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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.