Home / 20,676.69-28,540.33-11,730.14

Finding the Fourth Proportional to 20,676.69, 28,540.33 and 11,730.14

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Solution

The fourth proportional to 20,676.69, 28,540.33 and 11,730.14 is: 16,191.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,676.69 : 28,540.33 = 11,730.14 : x
  2. Step 2: Convert to fraction form
    20,676.69/28,540.33 = 11,730.14/x
  3. Step 3: Cross multiply
    20,676.69x = 28,540.33 × 11,730.14
  4. Step 4: Simplify right side
    20,676.69x = 334,782,066.55
  5. Step 5: Solve for x
    x = 334,782,066.55/20,676.69
  6. Step 6: Final answer
    x = 16,191.28

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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.