Home / 18,757.64-28,105.31-13,199.36

Finding the Fourth Proportional to 18,757.64, 28,105.31 and 13,199.36

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Solution

The fourth proportional to 18,757.64, 28,105.31 and 13,199.36 is: 19,777.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,757.64 : 28,105.31 = 13,199.36 : x
  2. Step 2: Convert to fraction form
    18,757.64/28,105.31 = 13,199.36/x
  3. Step 3: Cross multiply
    18,757.64x = 28,105.31 × 13,199.36
  4. Step 4: Simplify right side
    18,757.64x = 370,971,997.07
  5. Step 5: Solve for x
    x = 370,971,997.07/18,757.64
  6. Step 6: Final answer
    x = 19,777.11

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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.