Home / 14,771.97-20,380.82-8,398.08

Finding the Fourth Proportional to 14,771.97, 20,380.82 and 8,398.08

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Solution

The fourth proportional to 14,771.97, 20,380.82 and 8,398.08 is: 11,586.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,771.97 : 20,380.82 = 8,398.08 : x
  2. Step 2: Convert to fraction form
    14,771.97/20,380.82 = 8,398.08/x
  3. Step 3: Cross multiply
    14,771.97x = 20,380.82 × 8,398.08
  4. Step 4: Simplify right side
    14,771.97x = 171,159,714.84
  5. Step 5: Solve for x
    x = 171,159,714.84/14,771.97
  6. Step 6: Final answer
    x = 11,586.79

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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.