Home / 11,271.89-16,909.65-3,478.88

Finding the Fourth Proportional to 11,271.89, 16,909.65 and 3,478.88

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Solution

The fourth proportional to 11,271.89, 16,909.65 and 3,478.88 is: 5,218.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,271.89 : 16,909.65 = 3,478.88 : x
  2. Step 2: Convert to fraction form
    11,271.89/16,909.65 = 3,478.88/x
  3. Step 3: Cross multiply
    11,271.89x = 16,909.65 × 3,478.88
  4. Step 4: Simplify right side
    11,271.89x = 58,826,558.64
  5. Step 5: Solve for x
    x = 58,826,558.64/11,271.89
  6. Step 6: Final answer
    x = 5,218.87

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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.