Home / 12,387.44-18,576.50-4,989.38

Finding the Fourth Proportional to 12,387.44, 18,576.50 and 4,989.38

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Solution

The fourth proportional to 12,387.44, 18,576.50 and 4,989.38 is: 7,482.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,387.44 : 18,576.50 = 4,989.38 : x
  2. Step 2: Convert to fraction form
    12,387.44/18,576.50 = 4,989.38/x
  3. Step 3: Cross multiply
    12,387.44x = 18,576.50 × 4,989.38
  4. Step 4: Simplify right side
    12,387.44x = 92,685,099.74
  5. Step 5: Solve for x
    x = 92,685,099.74/12,387.44
  6. Step 6: Final answer
    x = 7,482.19

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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.