Home / 12,220.27-18,321.43-3,895.50

Finding the Fourth Proportional to 12,220.27, 18,321.43 and 3,895.50

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Solution

The fourth proportional to 12,220.27, 18,321.43 and 3,895.50 is: 5,840.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,220.27 : 18,321.43 = 3,895.50 : x
  2. Step 2: Convert to fraction form
    12,220.27/18,321.43 = 3,895.50/x
  3. Step 3: Cross multiply
    12,220.27x = 18,321.43 × 3,895.50
  4. Step 4: Simplify right side
    12,220.27x = 71,371,130.57
  5. Step 5: Solve for x
    x = 71,371,130.57/12,220.27
  6. Step 6: Final answer
    x = 5,840.39

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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.