Home / 13,200.68-18,214.80-8,168.25

Finding the Fourth Proportional to 13,200.68, 18,214.80 and 8,168.25

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Solution

The fourth proportional to 13,200.68, 18,214.80 and 8,168.25 is: 11,270.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,200.68 : 18,214.80 = 8,168.25 : x
  2. Step 2: Convert to fraction form
    13,200.68/18,214.80 = 8,168.25/x
  3. Step 3: Cross multiply
    13,200.68x = 18,214.80 × 8,168.25
  4. Step 4: Simplify right side
    13,200.68x = 148,783,040.10
  5. Step 5: Solve for x
    x = 148,783,040.10/13,200.68
  6. Step 6: Final answer
    x = 11,270.86

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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.