Home / 12,636.27-18,954.36-3,870.05

Finding the Fourth Proportional to 12,636.27, 18,954.36 and 3,870.05

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Solution

The fourth proportional to 12,636.27, 18,954.36 and 3,870.05 is: 5,805.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,636.27 : 18,954.36 = 3,870.05 : x
  2. Step 2: Convert to fraction form
    12,636.27/18,954.36 = 3,870.05/x
  3. Step 3: Cross multiply
    12,636.27x = 18,954.36 × 3,870.05
  4. Step 4: Simplify right side
    12,636.27x = 73,354,226.15
  5. Step 5: Solve for x
    x = 73,354,226.15/12,636.27
  6. Step 6: Final answer
    x = 5,805.05

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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.