Home / 12,492.80-18,739.40-3,727.80

Finding the Fourth Proportional to 12,492.80, 18,739.40 and 3,727.80

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Solution

The fourth proportional to 12,492.80, 18,739.40 and 3,727.80 is: 5,591.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,492.80 : 18,739.40 = 3,727.80 : x
  2. Step 2: Convert to fraction form
    12,492.80/18,739.40 = 3,727.80/x
  3. Step 3: Cross multiply
    12,492.80x = 18,739.40 × 3,727.80
  4. Step 4: Simplify right side
    12,492.80x = 69,856,735.32
  5. Step 5: Solve for x
    x = 69,856,735.32/12,492.80
  6. Step 6: Final answer
    x = 5,591.76

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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.