Home / 20,638.54-28,450.38-12,674.62

Finding the Fourth Proportional to 20,638.54, 28,450.38 and 12,674.62

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Solution

The fourth proportional to 20,638.54, 28,450.38 and 12,674.62 is: 17,472.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,638.54 : 28,450.38 = 12,674.62 : x
  2. Step 2: Convert to fraction form
    20,638.54/28,450.38 = 12,674.62/x
  3. Step 3: Cross multiply
    20,638.54x = 28,450.38 × 12,674.62
  4. Step 4: Simplify right side
    20,638.54x = 360,597,755.36
  5. Step 5: Solve for x
    x = 360,597,755.36/20,638.54
  6. Step 6: Final answer
    x = 17,472.06

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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.