Home / 20,846.88-28,771.44-11,892.32

Finding the Fourth Proportional to 20,846.88, 28,771.44 and 11,892.32

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Solution

The fourth proportional to 20,846.88, 28,771.44 and 11,892.32 is: 16,412.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,846.88 : 28,771.44 = 11,892.32 : x
  2. Step 2: Convert to fraction form
    20,846.88/28,771.44 = 11,892.32/x
  3. Step 3: Cross multiply
    20,846.88x = 28,771.44 × 11,892.32
  4. Step 4: Simplify right side
    20,846.88x = 342,159,171.34
  5. Step 5: Solve for x
    x = 342,159,171.34/20,846.88
  6. Step 6: Final answer
    x = 16,412.97

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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.