Home / 13,121.44-18,068.88-11,723.68

Finding the Fourth Proportional to 13,121.44, 18,068.88 and 11,723.68

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Solution

The fourth proportional to 13,121.44, 18,068.88 and 11,723.68 is: 16,144.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,121.44 : 18,068.88 = 11,723.68 : x
  2. Step 2: Convert to fraction form
    13,121.44/18,068.88 = 11,723.68/x
  3. Step 3: Cross multiply
    13,121.44x = 18,068.88 × 11,723.68
  4. Step 4: Simplify right side
    13,121.44x = 211,833,767.08
  5. Step 5: Solve for x
    x = 211,833,767.08/13,121.44
  6. Step 6: Final answer
    x = 16,144.09

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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.