Home / 12,220.35-18,318.81-3,895.77

Finding the Fourth Proportional to 12,220.35, 18,318.81 and 3,895.77

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Solution

The fourth proportional to 12,220.35, 18,318.81 and 3,895.77 is: 5,839.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,220.35 : 18,318.81 = 3,895.77 : x
  2. Step 2: Convert to fraction form
    12,220.35/18,318.81 = 3,895.77/x
  3. Step 3: Cross multiply
    12,220.35x = 18,318.81 × 3,895.77
  4. Step 4: Simplify right side
    12,220.35x = 71,365,953.74
  5. Step 5: Solve for x
    x = 71,365,953.74/12,220.35
  6. Step 6: Final answer
    x = 5,839.93

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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.