Home / 18,817.85-28,231.53-13,282.01

Finding the Fourth Proportional to 18,817.85, 28,231.53 and 13,282.01

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Solution

The fourth proportional to 18,817.85, 28,231.53 and 13,282.01 is: 19,926.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,817.85 : 28,231.53 = 13,282.01 : x
  2. Step 2: Convert to fraction form
    18,817.85/28,231.53 = 13,282.01/x
  3. Step 3: Cross multiply
    18,817.85x = 28,231.53 × 13,282.01
  4. Step 4: Simplify right side
    18,817.85x = 374,971,405.15
  5. Step 5: Solve for x
    x = 374,971,405.15/18,817.85
  6. Step 6: Final answer
    x = 19,926.36

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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.