Home / 20,028.84-27,640.68-12,479.64

Finding the Fourth Proportional to 20,028.84, 27,640.68 and 12,479.64

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Solution

The fourth proportional to 20,028.84, 27,640.68 and 12,479.64 is: 17,222.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,028.84 : 27,640.68 = 12,479.64 : x
  2. Step 2: Convert to fraction form
    20,028.84/27,640.68 = 12,479.64/x
  3. Step 3: Cross multiply
    20,028.84x = 27,640.68 × 12,479.64
  4. Step 4: Simplify right side
    20,028.84x = 344,945,735.76
  5. Step 5: Solve for x
    x = 344,945,735.76/20,028.84
  6. Step 6: Final answer
    x = 17,222.45

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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.