Home / 13,170.80-18,164.55-11,858.60

Finding the Fourth Proportional to 13,170.80, 18,164.55 and 11,858.60

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Solution

The fourth proportional to 13,170.80, 18,164.55 and 11,858.60 is: 16,354.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,170.80 : 18,164.55 = 11,858.60 : x
  2. Step 2: Convert to fraction form
    13,170.80/18,164.55 = 11,858.60/x
  3. Step 3: Cross multiply
    13,170.80x = 18,164.55 × 11,858.60
  4. Step 4: Simplify right side
    13,170.80x = 215,406,222.51
  5. Step 5: Solve for x
    x = 215,406,222.51/13,170.80
  6. Step 6: Final answer
    x = 16,354.83

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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.