Home / 13,173.03-18,157.77-12,087.09

Finding the Fourth Proportional to 13,173.03, 18,157.77 and 12,087.09

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Solution

The fourth proportional to 13,173.03, 18,157.77 and 12,087.09 is: 16,660.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,173.03 : 18,157.77 = 12,087.09 : x
  2. Step 2: Convert to fraction form
    13,173.03/18,157.77 = 12,087.09/x
  3. Step 3: Cross multiply
    13,173.03x = 18,157.77 × 12,087.09
  4. Step 4: Simplify right side
    13,173.03x = 219,474,600.19
  5. Step 5: Solve for x
    x = 219,474,600.19/13,173.03
  6. Step 6: Final answer
    x = 16,660.90

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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.