Home / 20,676.83-28,533.20-11,245.40

Finding the Fourth Proportional to 20,676.83, 28,533.20 and 11,245.40

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Solution

The fourth proportional to 20,676.83, 28,533.20 and 11,245.40 is: 15,518.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,676.83 : 28,533.20 = 11,245.40 : x
  2. Step 2: Convert to fraction form
    20,676.83/28,533.20 = 11,245.40/x
  3. Step 3: Cross multiply
    20,676.83x = 28,533.20 × 11,245.40
  4. Step 4: Simplify right side
    20,676.83x = 320,867,048.39
  5. Step 5: Solve for x
    x = 320,867,048.39/20,676.83
  6. Step 6: Final answer
    x = 15,518.20

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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.