Home / 18,745.20-28,113.30-10,830.60

Finding the Fourth Proportional to 18,745.20, 28,113.30 and 10,830.60

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Solution

The fourth proportional to 18,745.20, 28,113.30 and 10,830.60 is: 16,243.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,745.20 : 28,113.30 = 10,830.60 : x
  2. Step 2: Convert to fraction form
    18,745.20/28,113.30 = 10,830.60/x
  3. Step 3: Cross multiply
    18,745.20x = 28,113.30 × 10,830.60
  4. Step 4: Simplify right side
    18,745.20x = 304,483,906.98
  5. Step 5: Solve for x
    x = 304,483,906.98/18,745.20
  6. Step 6: Final answer
    x = 16,243.30

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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.