Home / 19,163.18-28,739.52-12,132.60

Finding the Fourth Proportional to 19,163.18, 28,739.52 and 12,132.60

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Solution

The fourth proportional to 19,163.18, 28,739.52 and 12,132.60 is: 18,195.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,163.18 : 28,739.52 = 12,132.60 : x
  2. Step 2: Convert to fraction form
    19,163.18/28,739.52 = 12,132.60/x
  3. Step 3: Cross multiply
    19,163.18x = 28,739.52 × 12,132.60
  4. Step 4: Simplify right side
    19,163.18x = 348,685,100.35
  5. Step 5: Solve for x
    x = 348,685,100.35/19,163.18
  6. Step 6: Final answer
    x = 18,195.58

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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.