Home / 10,871.80-16,296.90-5,320.60

Finding the Fourth Proportional to 10,871.80, 16,296.90 and 5,320.60

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Solution

The fourth proportional to 10,871.80, 16,296.90 and 5,320.60 is: 7,975.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,871.80 : 16,296.90 = 5,320.60 : x
  2. Step 2: Convert to fraction form
    10,871.80/16,296.90 = 5,320.60/x
  3. Step 3: Cross multiply
    10,871.80x = 16,296.90 × 5,320.60
  4. Step 4: Simplify right side
    10,871.80x = 86,709,286.14
  5. Step 5: Solve for x
    x = 86,709,286.14/10,871.80
  6. Step 6: Final answer
    x = 7,975.61

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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.