Home / 20,604.85-28,436.45-11,653.94

Finding the Fourth Proportional to 20,604.85, 28,436.45 and 11,653.94

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Solution

The fourth proportional to 20,604.85, 28,436.45 and 11,653.94 is: 16,083.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,604.85 : 28,436.45 = 11,653.94 : x
  2. Step 2: Convert to fraction form
    20,604.85/28,436.45 = 11,653.94/x
  3. Step 3: Cross multiply
    20,604.85x = 28,436.45 × 11,653.94
  4. Step 4: Simplify right side
    20,604.85x = 331,396,682.11
  5. Step 5: Solve for x
    x = 331,396,682.11/20,604.85
  6. Step 6: Final answer
    x = 16,083.43

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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.