Home / 12,124-18,185.46-4,228.34

Finding the Fourth Proportional to 12,124, 18,185.46 and 4,228.34

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Solution

The fourth proportional to 12,124, 18,185.46 and 4,228.34 is: 6,342.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,124 : 18,185.46 = 4,228.34 : x
  2. Step 2: Convert to fraction form
    12,124/18,185.46 = 4,228.34/x
  3. Step 3: Cross multiply
    12,124x = 18,185.46 × 4,228.34
  4. Step 4: Simplify right side
    12,124x = 76,894,307.94
  5. Step 5: Solve for x
    x = 76,894,307.94/12,124
  6. Step 6: Final answer
    x = 6,342.32

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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.