Home / 10,981.80-16,468.65-5,433.30

Finding the Fourth Proportional to 10,981.80, 16,468.65 and 5,433.30

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Solution

The fourth proportional to 10,981.80, 16,468.65 and 5,433.30 is: 8,147.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,981.80 : 16,468.65 = 5,433.30 : x
  2. Step 2: Convert to fraction form
    10,981.80/16,468.65 = 5,433.30/x
  3. Step 3: Cross multiply
    10,981.80x = 16,468.65 × 5,433.30
  4. Step 4: Simplify right side
    10,981.80x = 89,479,116.05
  5. Step 5: Solve for x
    x = 89,479,116.05/10,981.80
  6. Step 6: Final answer
    x = 8,147.95

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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.