Home / 13,911.89-20,871.25-4,051.26

Finding the Fourth Proportional to 13,911.89, 20,871.25 and 4,051.26

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Solution

The fourth proportional to 13,911.89, 20,871.25 and 4,051.26 is: 6,077.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,911.89 : 20,871.25 = 4,051.26 : x
  2. Step 2: Convert to fraction form
    13,911.89/20,871.25 = 4,051.26/x
  3. Step 3: Cross multiply
    13,911.89x = 20,871.25 × 4,051.26
  4. Step 4: Simplify right side
    13,911.89x = 84,554,755.92
  5. Step 5: Solve for x
    x = 84,554,755.92/13,911.89
  6. Step 6: Final answer
    x = 6,077.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.