Home / 13,628.68-18,808.12-7,660.33

Finding the Fourth Proportional to 13,628.68, 18,808.12 and 7,660.33

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Solution

The fourth proportional to 13,628.68, 18,808.12 and 7,660.33 is: 10,571.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,628.68 : 18,808.12 = 7,660.33 : x
  2. Step 2: Convert to fraction form
    13,628.68/18,808.12 = 7,660.33/x
  3. Step 3: Cross multiply
    13,628.68x = 18,808.12 × 7,660.33
  4. Step 4: Simplify right side
    13,628.68x = 144,076,414.60
  5. Step 5: Solve for x
    x = 144,076,414.60/13,628.68
  6. Step 6: Final answer
    x = 10,571.56

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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.