Home / 13,760.33-20,628.12-4,989.09

Finding the Fourth Proportional to 13,760.33, 20,628.12 and 4,989.09

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Solution

The fourth proportional to 13,760.33, 20,628.12 and 4,989.09 is: 7,479.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,760.33 : 20,628.12 = 4,989.09 : x
  2. Step 2: Convert to fraction form
    13,760.33/20,628.12 = 4,989.09/x
  3. Step 3: Cross multiply
    13,760.33x = 20,628.12 × 4,989.09
  4. Step 4: Simplify right side
    13,760.33x = 102,915,615.21
  5. Step 5: Solve for x
    x = 102,915,615.21/13,760.33
  6. Step 6: Final answer
    x = 7,479.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.