Home / 13,628.93-18,808.46-7,660.58

Finding the Fourth Proportional to 13,628.93, 18,808.46 and 7,660.58

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Solution

The fourth proportional to 13,628.93, 18,808.46 and 7,660.58 is: 10,571.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,628.93 : 18,808.46 = 7,660.58 : x
  2. Step 2: Convert to fraction form
    13,628.93/18,808.46 = 7,660.58/x
  3. Step 3: Cross multiply
    13,628.93x = 18,808.46 × 7,660.58
  4. Step 4: Simplify right side
    13,628.93x = 144,083,778.68
  5. Step 5: Solve for x
    x = 144,083,778.68/13,628.93
  6. Step 6: Final answer
    x = 10,571.90

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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.