Home / 13,212.06-18,231.44-7,243.98

Finding the Fourth Proportional to 13,212.06, 18,231.44 and 7,243.98

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Solution

The fourth proportional to 13,212.06, 18,231.44 and 7,243.98 is: 9,996.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,212.06 : 18,231.44 = 7,243.98 : x
  2. Step 2: Convert to fraction form
    13,212.06/18,231.44 = 7,243.98/x
  3. Step 3: Cross multiply
    13,212.06x = 18,231.44 × 7,243.98
  4. Step 4: Simplify right side
    13,212.06x = 132,068,150.51
  5. Step 5: Solve for x
    x = 132,068,150.51/13,212.06
  6. Step 6: Final answer
    x = 9,996.03

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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.