Home / 20,609.05-28,440.15-11,656.22

Finding the Fourth Proportional to 20,609.05, 28,440.15 and 11,656.22

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Solution

The fourth proportional to 20,609.05, 28,440.15 and 11,656.22 is: 16,085.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,609.05 : 28,440.15 = 11,656.22 : x
  2. Step 2: Convert to fraction form
    20,609.05/28,440.15 = 11,656.22/x
  3. Step 3: Cross multiply
    20,609.05x = 28,440.15 × 11,656.22
  4. Step 4: Simplify right side
    20,609.05x = 331,504,503.03
  5. Step 5: Solve for x
    x = 331,504,503.03/20,609.05
  6. Step 6: Final answer
    x = 16,085.38

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Half scale
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Double scale
Find fourth proportional to 20,610.05, 28,441.53 and 11,657.22
Similar ratio
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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.