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Finding the Fourth Proportional to 10,725.80, 16,099.58 and 7,809.80

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Solution

The fourth proportional to 10,725.80, 16,099.58 and 7,809.80 is: 11,722.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,725.80 : 16,099.58 = 7,809.80 : x
  2. Step 2: Convert to fraction form
    10,725.80/16,099.58 = 7,809.80/x
  3. Step 3: Cross multiply
    10,725.80x = 16,099.58 × 7,809.80
  4. Step 4: Simplify right side
    10,725.80x = 125,734,499.88
  5. Step 5: Solve for x
    x = 125,734,499.88/10,725.80
  6. Step 6: Final answer
    x = 11,722.62

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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.