Home / 20,338.88-30,450.80-12,924.96

Finding the Fourth Proportional to 20,338.88, 30,450.80 and 12,924.96

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Solution

The fourth proportional to 20,338.88, 30,450.80 and 12,924.96 is: 19,350.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,338.88 : 30,450.80 = 12,924.96 : x
  2. Step 2: Convert to fraction form
    20,338.88/30,450.80 = 12,924.96/x
  3. Step 3: Cross multiply
    20,338.88x = 30,450.80 × 12,924.96
  4. Step 4: Simplify right side
    20,338.88x = 393,575,371.97
  5. Step 5: Solve for x
    x = 393,575,371.97/20,338.88
  6. Step 6: Final answer
    x = 19,350.89

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1.5x scale

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.