Home / 11,819.79-16,310.45-6,783.89

Finding the Fourth Proportional to 11,819.79, 16,310.45 and 6,783.89

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Solution

The fourth proportional to 11,819.79, 16,310.45 and 6,783.89 is: 9,361.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,819.79 : 16,310.45 = 6,783.89 : x
  2. Step 2: Convert to fraction form
    11,819.79/16,310.45 = 6,783.89/x
  3. Step 3: Cross multiply
    11,819.79x = 16,310.45 × 6,783.89
  4. Step 4: Simplify right side
    11,819.79x = 110,648,234.06
  5. Step 5: Solve for x
    x = 110,648,234.06/11,819.79
  6. Step 6: Final answer
    x = 9,361.27

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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.