Home / 20,662.12-28,513.80-11,230.60

Finding the Fourth Proportional to 20,662.12, 28,513.80 and 11,230.60

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Solution

The fourth proportional to 20,662.12, 28,513.80 and 11,230.60 is: 15,498.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,662.12 : 28,513.80 = 11,230.60 : x
  2. Step 2: Convert to fraction form
    20,662.12/28,513.80 = 11,230.60/x
  3. Step 3: Cross multiply
    20,662.12x = 28,513.80 × 11,230.60
  4. Step 4: Simplify right side
    20,662.12x = 320,227,082.28
  5. Step 5: Solve for x
    x = 320,227,082.28/20,662.12
  6. Step 6: Final answer
    x = 15,498.27

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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.