Home / 13,621.37-18,795.45-7,651.90

Finding the Fourth Proportional to 13,621.37, 18,795.45 and 7,651.90

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Solution

The fourth proportional to 13,621.37, 18,795.45 and 7,651.90 is: 10,558.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,621.37 : 18,795.45 = 7,651.90 : x
  2. Step 2: Convert to fraction form
    13,621.37/18,795.45 = 7,651.90/x
  3. Step 3: Cross multiply
    13,621.37x = 18,795.45 × 7,651.90
  4. Step 4: Simplify right side
    13,621.37x = 143,820,856.87
  5. Step 5: Solve for x
    x = 143,820,856.87/13,621.37
  6. Step 6: Final answer
    x = 10,558.48

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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.