Home / 12,282.85-18,420.90-3,396.07

Finding the Fourth Proportional to 12,282.85, 18,420.90 and 3,396.07

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Solution

The fourth proportional to 12,282.85, 18,420.90 and 3,396.07 is: 5,093.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,282.85 : 18,420.90 = 3,396.07 : x
  2. Step 2: Convert to fraction form
    12,282.85/18,420.90 = 3,396.07/x
  3. Step 3: Cross multiply
    12,282.85x = 18,420.90 × 3,396.07
  4. Step 4: Simplify right side
    12,282.85x = 62,558,665.86
  5. Step 5: Solve for x
    x = 62,558,665.86/12,282.85
  6. Step 6: Final answer
    x = 5,093.17

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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.