Home / 12,520.72-18,781.08-3,286

Finding the Fourth Proportional to 12,520.72, 18,781.08 and 3,286

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Solution

The fourth proportional to 12,520.72, 18,781.08 and 3,286 is: 4,929.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,520.72 : 18,781.08 = 3,286 : x
  2. Step 2: Convert to fraction form
    12,520.72/18,781.08 = 3,286/x
  3. Step 3: Cross multiply
    12,520.72x = 18,781.08 × 3,286
  4. Step 4: Simplify right side
    12,520.72x = 61,714,628.88
  5. Step 5: Solve for x
    x = 61,714,628.88/12,520.72
  6. Step 6: Final answer
    x = 4,929.00

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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.