Home / 12,815.28-19,223.04-3,581.28

Finding the Fourth Proportional to 12,815.28, 19,223.04 and 3,581.28

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Solution

The fourth proportional to 12,815.28, 19,223.04 and 3,581.28 is: 5,371.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,815.28 : 19,223.04 = 3,581.28 : x
  2. Step 2: Convert to fraction form
    12,815.28/19,223.04 = 3,581.28/x
  3. Step 3: Cross multiply
    12,815.28x = 19,223.04 × 3,581.28
  4. Step 4: Simplify right side
    12,815.28x = 68,843,088.69
  5. Step 5: Solve for x
    x = 68,843,088.69/12,815.28
  6. Step 6: Final answer
    x = 5,371.95

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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.