Home / 13,200.49-18,209.77-8,163.10

Finding the Fourth Proportional to 13,200.49, 18,209.77 and 8,163.10

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Solution

The fourth proportional to 13,200.49, 18,209.77 and 8,163.10 is: 11,260.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,200.49 : 18,209.77 = 8,163.10 : x
  2. Step 2: Convert to fraction form
    13,200.49/18,209.77 = 8,163.10/x
  3. Step 3: Cross multiply
    13,200.49x = 18,209.77 × 8,163.10
  4. Step 4: Simplify right side
    13,200.49x = 148,648,173.49
  5. Step 5: Solve for x
    x = 148,648,173.49/13,200.49
  6. Step 6: Final answer
    x = 11,260.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.