Home / 13,850.16-20,775.92-3,989.20

Finding the Fourth Proportional to 13,850.16, 20,775.92 and 3,989.20

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Solution

The fourth proportional to 13,850.16, 20,775.92 and 3,989.20 is: 5,984.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,850.16 : 20,775.92 = 3,989.20 : x
  2. Step 2: Convert to fraction form
    13,850.16/20,775.92 = 3,989.20/x
  3. Step 3: Cross multiply
    13,850.16x = 20,775.92 × 3,989.20
  4. Step 4: Simplify right side
    13,850.16x = 82,879,300.06
  5. Step 5: Solve for x
    x = 82,879,300.06/13,850.16
  6. Step 6: Final answer
    x = 5,984.00

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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.