Home / 20,169.42-27,836.37-12,211.98

Finding the Fourth Proportional to 20,169.42, 27,836.37 and 12,211.98

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Solution

The fourth proportional to 20,169.42, 27,836.37 and 12,211.98 is: 16,854.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,169.42 : 27,836.37 = 12,211.98 : x
  2. Step 2: Convert to fraction form
    20,169.42/27,836.37 = 12,211.98/x
  3. Step 3: Cross multiply
    20,169.42x = 27,836.37 × 12,211.98
  4. Step 4: Simplify right side
    20,169.42x = 339,937,193.71
  5. Step 5: Solve for x
    x = 339,937,193.71/20,169.42
  6. Step 6: Final answer
    x = 16,854.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.