Home / 13,218.24-18,241.44-7,629.60

Finding the Fourth Proportional to 13,218.24, 18,241.44 and 7,629.60

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Solution

The fourth proportional to 13,218.24, 18,241.44 and 7,629.60 is: 10,529.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,218.24 : 18,241.44 = 7,629.60 : x
  2. Step 2: Convert to fraction form
    13,218.24/18,241.44 = 7,629.60/x
  3. Step 3: Cross multiply
    13,218.24x = 18,241.44 × 7,629.60
  4. Step 4: Simplify right side
    13,218.24x = 139,174,890.62
  5. Step 5: Solve for x
    x = 139,174,890.62/13,218.24
  6. Step 6: Final answer
    x = 10,529.00

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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.