Home / 12,389.14-18,583.44-3,155.14

Finding the Fourth Proportional to 12,389.14, 18,583.44 and 3,155.14

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Solution

The fourth proportional to 12,389.14, 18,583.44 and 3,155.14 is: 4,732.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,389.14 : 18,583.44 = 3,155.14 : x
  2. Step 2: Convert to fraction form
    12,389.14/18,583.44 = 3,155.14/x
  3. Step 3: Cross multiply
    12,389.14x = 18,583.44 × 3,155.14
  4. Step 4: Simplify right side
    12,389.14x = 58,633,354.88
  5. Step 5: Solve for x
    x = 58,633,354.88/12,389.14
  6. Step 6: Final answer
    x = 4,732.64

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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.