Home / 20,676.48-28,533.60-11,245.04

Finding the Fourth Proportional to 20,676.48, 28,533.60 and 11,245.04

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Solution

The fourth proportional to 20,676.48, 28,533.60 and 11,245.04 is: 15,518.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,676.48 : 28,533.60 = 11,245.04 : x
  2. Step 2: Convert to fraction form
    20,676.48/28,533.60 = 11,245.04/x
  3. Step 3: Cross multiply
    20,676.48x = 28,533.60 × 11,245.04
  4. Step 4: Simplify right side
    20,676.48x = 320,861,473.34
  5. Step 5: Solve for x
    x = 320,861,473.34/20,676.48
  6. Step 6: Final answer
    x = 15,518.19

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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.