Home / 13,687.48-20,528.74-3,824.31

Finding the Fourth Proportional to 13,687.48, 20,528.74 and 3,824.31

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Solution

The fourth proportional to 13,687.48, 20,528.74 and 3,824.31 is: 5,735.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,687.48 : 20,528.74 = 3,824.31 : x
  2. Step 2: Convert to fraction form
    13,687.48/20,528.74 = 3,824.31/x
  3. Step 3: Cross multiply
    13,687.48x = 20,528.74 × 3,824.31
  4. Step 4: Simplify right side
    13,687.48x = 78,508,347.43
  5. Step 5: Solve for x
    x = 78,508,347.43/13,687.48
  6. Step 6: Final answer
    x = 5,735.78

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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.