Home / 14,581.21-21,872.15-5,221.87

Finding the Fourth Proportional to 14,581.21, 21,872.15 and 5,221.87

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Solution

The fourth proportional to 14,581.21, 21,872.15 and 5,221.87 is: 7,832.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,581.21 : 21,872.15 = 5,221.87 : x
  2. Step 2: Convert to fraction form
    14,581.21/21,872.15 = 5,221.87/x
  3. Step 3: Cross multiply
    14,581.21x = 21,872.15 × 5,221.87
  4. Step 4: Simplify right side
    14,581.21x = 114,213,388.45
  5. Step 5: Solve for x
    x = 114,213,388.45/14,581.21
  6. Step 6: Final answer
    x = 7,832.92

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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.