Home / 11,011.01-16,519.20-5,160.78

Finding the Fourth Proportional to 11,011.01, 16,519.20 and 5,160.78

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Solution

The fourth proportional to 11,011.01, 16,519.20 and 5,160.78 is: 7,742.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,011.01 : 16,519.20 = 5,160.78 : x
  2. Step 2: Convert to fraction form
    11,011.01/16,519.20 = 5,160.78/x
  3. Step 3: Cross multiply
    11,011.01x = 16,519.20 × 5,160.78
  4. Step 4: Simplify right side
    11,011.01x = 85,251,956.98
  5. Step 5: Solve for x
    x = 85,251,956.98/11,011.01
  6. Step 6: Final answer
    x = 7,742.43

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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.