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Finding the Fourth Proportional to 12,283.99, 18,429.09 and 4,888.42

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Solution

The fourth proportional to 12,283.99, 18,429.09 and 4,888.42 is: 7,333.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,283.99 : 18,429.09 = 4,888.42 : x
  2. Step 2: Convert to fraction form
    12,283.99/18,429.09 = 4,888.42/x
  3. Step 3: Cross multiply
    12,283.99x = 18,429.09 × 4,888.42
  4. Step 4: Simplify right side
    12,283.99x = 90,089,067.73
  5. Step 5: Solve for x
    x = 90,089,067.73/12,283.99
  6. Step 6: Final answer
    x = 7,333.86

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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.