Home / 14,021.21-20,969.82-12,472.09

Finding the Fourth Proportional to 14,021.21, 20,969.82 and 12,472.09

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Solution

The fourth proportional to 14,021.21, 20,969.82 and 12,472.09 is: 18,652.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,021.21 : 20,969.82 = 12,472.09 : x
  2. Step 2: Convert to fraction form
    14,021.21/20,969.82 = 12,472.09/x
  3. Step 3: Cross multiply
    14,021.21x = 20,969.82 × 12,472.09
  4. Step 4: Simplify right side
    14,021.21x = 261,537,429.90
  5. Step 5: Solve for x
    x = 261,537,429.90/14,021.21
  6. Step 6: Final answer
    x = 18,652.98

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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.