Home / 20,362.54-28,086.60-11,979.04

Finding the Fourth Proportional to 20,362.54, 28,086.60 and 11,979.04

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Solution

The fourth proportional to 20,362.54, 28,086.60 and 11,979.04 is: 16,523.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,362.54 : 28,086.60 = 11,979.04 : x
  2. Step 2: Convert to fraction form
    20,362.54/28,086.60 = 11,979.04/x
  3. Step 3: Cross multiply
    20,362.54x = 28,086.60 × 11,979.04
  4. Step 4: Simplify right side
    20,362.54x = 336,450,504.86
  5. Step 5: Solve for x
    x = 336,450,504.86/20,362.54
  6. Step 6: Final answer
    x = 16,523.01

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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.