Home / 20,706.96-28,512.33-15,609.90

Finding the Fourth Proportional to 20,706.96, 28,512.33 and 15,609.90

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Solution

The fourth proportional to 20,706.96, 28,512.33 and 15,609.90 is: 21,493.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,706.96 : 28,512.33 = 15,609.90 : x
  2. Step 2: Convert to fraction form
    20,706.96/28,512.33 = 15,609.90/x
  3. Step 3: Cross multiply
    20,706.96x = 28,512.33 × 15,609.90
  4. Step 4: Simplify right side
    20,706.96x = 445,074,620.07
  5. Step 5: Solve for x
    x = 445,074,620.07/20,706.96
  6. Step 6: Final answer
    x = 21,493.96

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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.