Home / 20,871.60-31,297.16-10,329.44

Finding the Fourth Proportional to 20,871.60, 31,297.16 and 10,329.44

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Solution

The fourth proportional to 20,871.60, 31,297.16 and 10,329.44 is: 15,489.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,871.60 : 31,297.16 = 10,329.44 : x
  2. Step 2: Convert to fraction form
    20,871.60/31,297.16 = 10,329.44/x
  3. Step 3: Cross multiply
    20,871.60x = 31,297.16 × 10,329.44
  4. Step 4: Simplify right side
    20,871.60x = 323,282,136.39
  5. Step 5: Solve for x
    x = 323,282,136.39/20,871.60
  6. Step 6: Final answer
    x = 15,489.09

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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.