Home / 12,387.72-18,576.74-4,488.36

Finding the Fourth Proportional to 12,387.72, 18,576.74 and 4,488.36

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Solution

The fourth proportional to 12,387.72, 18,576.74 and 4,488.36 is: 6,730.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,387.72 : 18,576.74 = 4,488.36 : x
  2. Step 2: Convert to fraction form
    12,387.72/18,576.74 = 4,488.36/x
  3. Step 3: Cross multiply
    12,387.72x = 18,576.74 × 4,488.36
  4. Step 4: Simplify right side
    12,387.72x = 83,379,096.75
  5. Step 5: Solve for x
    x = 83,379,096.75/12,387.72
  6. Step 6: Final answer
    x = 6,730.79

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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.