Home / 12,135.93-18,203.79-3,370.83

Finding the Fourth Proportional to 12,135.93, 18,203.79 and 3,370.83

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Solution

The fourth proportional to 12,135.93, 18,203.79 and 3,370.83 is: 5,056.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,135.93 : 18,203.79 = 3,370.83 : x
  2. Step 2: Convert to fraction form
    12,135.93/18,203.79 = 3,370.83/x
  3. Step 3: Cross multiply
    12,135.93x = 18,203.79 × 3,370.83
  4. Step 4: Simplify right side
    12,135.93x = 61,361,881.45
  5. Step 5: Solve for x
    x = 61,361,881.45/12,135.93
  6. Step 6: Final answer
    x = 5,056.22

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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.