Home / 13,212.45-18,233.44-7,243.77

Finding the Fourth Proportional to 13,212.45, 18,233.44 and 7,243.77

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Solution

The fourth proportional to 13,212.45, 18,233.44 and 7,243.77 is: 9,996.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,212.45 : 18,233.44 = 7,243.77 : x
  2. Step 2: Convert to fraction form
    13,212.45/18,233.44 = 7,243.77/x
  3. Step 3: Cross multiply
    13,212.45x = 18,233.44 × 7,243.77
  4. Step 4: Simplify right side
    13,212.45x = 132,078,845.67
  5. Step 5: Solve for x
    x = 132,078,845.67/13,212.45
  6. Step 6: Final answer
    x = 9,996.54

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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.