Home / 19,103.85-28,662.26-7,418.25

Finding the Fourth Proportional to 19,103.85, 28,662.26 and 7,418.25

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Solution

The fourth proportional to 19,103.85, 28,662.26 and 7,418.25 is: 11,129.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,103.85 : 28,662.26 = 7,418.25 : x
  2. Step 2: Convert to fraction form
    19,103.85/28,662.26 = 7,418.25/x
  3. Step 3: Cross multiply
    19,103.85x = 28,662.26 × 7,418.25
  4. Step 4: Simplify right side
    19,103.85x = 212,623,773.15
  5. Step 5: Solve for x
    x = 212,623,773.15/19,103.85
  6. Step 6: Final answer
    x = 11,129.89

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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.