Home / 12,145.55-18,190.09-11,724.64

Finding the Fourth Proportional to 12,145.55, 18,190.09 and 11,724.64

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Solution

The fourth proportional to 12,145.55, 18,190.09 and 11,724.64 is: 17,559.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,145.55 : 18,190.09 = 11,724.64 : x
  2. Step 2: Convert to fraction form
    12,145.55/18,190.09 = 11,724.64/x
  3. Step 3: Cross multiply
    12,145.55x = 18,190.09 × 11,724.64
  4. Step 4: Simplify right side
    12,145.55x = 213,272,182.03
  5. Step 5: Solve for x
    x = 213,272,182.03/12,145.55
  6. Step 6: Final answer
    x = 17,559.69

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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.