Home / 30,556.20-45,805-19,428.44

Finding the Fourth Proportional to 30,556.20, 45,805 and 19,428.44

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Solution

The fourth proportional to 30,556.20, 45,805 and 19,428.44 is: 29,124.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,556.20 : 45,805 = 19,428.44 : x
  2. Step 2: Convert to fraction form
    30,556.20/45,805 = 19,428.44/x
  3. Step 3: Cross multiply
    30,556.20x = 45,805 × 19,428.44
  4. Step 4: Simplify right side
    30,556.20x = 889,919,694.20
  5. Step 5: Solve for x
    x = 889,919,694.20/30,556.20
  6. Step 6: Final answer
    x = 29,124.03

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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.