Home / 12,122.48-18,186.94-3,802.80

Finding the Fourth Proportional to 12,122.48, 18,186.94 and 3,802.80

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Solution

The fourth proportional to 12,122.48, 18,186.94 and 3,802.80 is: 5,705.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,122.48 : 18,186.94 = 3,802.80 : x
  2. Step 2: Convert to fraction form
    12,122.48/18,186.94 = 3,802.80/x
  3. Step 3: Cross multiply
    12,122.48x = 18,186.94 × 3,802.80
  4. Step 4: Simplify right side
    12,122.48x = 69,161,295.43
  5. Step 5: Solve for x
    x = 69,161,295.43/12,122.48
  6. Step 6: Final answer
    x = 5,705.21

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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.