Home / 13,855.37-20,792.16-5,090.36

Finding the Fourth Proportional to 13,855.37, 20,792.16 and 5,090.36

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Solution

The fourth proportional to 13,855.37, 20,792.16 and 5,090.36 is: 7,638.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,855.37 : 20,792.16 = 5,090.36 : x
  2. Step 2: Convert to fraction form
    13,855.37/20,792.16 = 5,090.36/x
  3. Step 3: Cross multiply
    13,855.37x = 20,792.16 × 5,090.36
  4. Step 4: Simplify right side
    13,855.37x = 105,839,475.62
  5. Step 5: Solve for x
    x = 105,839,475.62/13,855.37
  6. Step 6: Final answer
    x = 7,638.88

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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.