Home / 13,629.24-18,808.71-7,660.53

Finding the Fourth Proportional to 13,629.24, 18,808.71 and 7,660.53

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Solution

The fourth proportional to 13,629.24, 18,808.71 and 7,660.53 is: 10,571.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,629.24 : 18,808.71 = 7,660.53 : x
  2. Step 2: Convert to fraction form
    13,629.24/18,808.71 = 7,660.53/x
  3. Step 3: Cross multiply
    13,629.24x = 18,808.71 × 7,660.53
  4. Step 4: Simplify right side
    13,629.24x = 144,084,687.22
  5. Step 5: Solve for x
    x = 144,084,687.22/13,629.24
  6. Step 6: Final answer
    x = 10,571.73

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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.