Home / 11,213.52-16,808.40-3,811.20

Finding the Fourth Proportional to 11,213.52, 16,808.40 and 3,811.20

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Solution

The fourth proportional to 11,213.52, 16,808.40 and 3,811.20 is: 5,712.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,213.52 : 16,808.40 = 3,811.20 : x
  2. Step 2: Convert to fraction form
    11,213.52/16,808.40 = 3,811.20/x
  3. Step 3: Cross multiply
    11,213.52x = 16,808.40 × 3,811.20
  4. Step 4: Simplify right side
    11,213.52x = 64,060,174.08
  5. Step 5: Solve for x
    x = 64,060,174.08/11,213.52
  6. Step 6: Final answer
    x = 5,712.76

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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.