Home / 13,220.24-18,237.57-7,628

Finding the Fourth Proportional to 13,220.24, 18,237.57 and 7,628

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Solution

The fourth proportional to 13,220.24, 18,237.57 and 7,628 is: 10,522.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,220.24 : 18,237.57 = 7,628 : x
  2. Step 2: Convert to fraction form
    13,220.24/18,237.57 = 7,628/x
  3. Step 3: Cross multiply
    13,220.24x = 18,237.57 × 7,628
  4. Step 4: Simplify right side
    13,220.24x = 139,116,183.96
  5. Step 5: Solve for x
    x = 139,116,183.96/13,220.24
  6. Step 6: Final answer
    x = 10,522.97

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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.