Home / 10,989.76-16,487.34-3,198.64

Finding the Fourth Proportional to 10,989.76, 16,487.34 and 3,198.64

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Solution

The fourth proportional to 10,989.76, 16,487.34 and 3,198.64 is: 4,798.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,989.76 : 16,487.34 = 3,198.64 : x
  2. Step 2: Convert to fraction form
    10,989.76/16,487.34 = 3,198.64/x
  3. Step 3: Cross multiply
    10,989.76x = 16,487.34 × 3,198.64
  4. Step 4: Simplify right side
    10,989.76x = 52,736,966.79
  5. Step 5: Solve for x
    x = 52,736,966.79/10,989.76
  6. Step 6: Final answer
    x = 4,798.74

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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.