Home / 12,389.80-18,584.64-3,029.87

Finding the Fourth Proportional to 12,389.80, 18,584.64 and 3,029.87

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Solution

The fourth proportional to 12,389.80, 18,584.64 and 3,029.87 is: 4,544.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,389.80 : 18,584.64 = 3,029.87 : x
  2. Step 2: Convert to fraction form
    12,389.80/18,584.64 = 3,029.87/x
  3. Step 3: Cross multiply
    12,389.80x = 18,584.64 × 3,029.87
  4. Step 4: Simplify right side
    12,389.80x = 56,309,043.20
  5. Step 5: Solve for x
    x = 56,309,043.20/12,389.80
  6. Step 6: Final answer
    x = 4,544.79

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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.