Home / 18,907.49-28,367.60-8,376.05

Finding the Fourth Proportional to 18,907.49, 28,367.60 and 8,376.05

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Solution

The fourth proportional to 18,907.49, 28,367.60 and 8,376.05 is: 12,566.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,907.49 : 28,367.60 = 8,376.05 : x
  2. Step 2: Convert to fraction form
    18,907.49/28,367.60 = 8,376.05/x
  3. Step 3: Cross multiply
    18,907.49x = 28,367.60 × 8,376.05
  4. Step 4: Simplify right side
    18,907.49x = 237,608,252.26
  5. Step 5: Solve for x
    x = 237,608,252.26/18,907.49
  6. Step 6: Final answer
    x = 12,566.89

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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.