Home / 12,815.68-19,224.28-3,581.68

Finding the Fourth Proportional to 12,815.68, 19,224.28 and 3,581.68

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Solution

The fourth proportional to 12,815.68, 19,224.28 and 3,581.68 is: 5,372.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,815.68 : 19,224.28 = 3,581.68 : x
  2. Step 2: Convert to fraction form
    12,815.68/19,224.28 = 3,581.68/x
  3. Step 3: Cross multiply
    12,815.68x = 19,224.28 × 3,581.68
  4. Step 4: Simplify right side
    12,815.68x = 68,855,219.19
  5. Step 5: Solve for x
    x = 68,855,219.19/12,815.68
  6. Step 6: Final answer
    x = 5,372.73

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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.