Home / 20,676.40-28,533.32-11,723.88

Finding the Fourth Proportional to 20,676.40, 28,533.32 and 11,723.88

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Solution

The fourth proportional to 20,676.40, 28,533.32 and 11,723.88 is: 16,178.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,676.40 : 28,533.32 = 11,723.88 : x
  2. Step 2: Convert to fraction form
    20,676.40/28,533.32 = 11,723.88/x
  3. Step 3: Cross multiply
    20,676.40x = 28,533.32 × 11,723.88
  4. Step 4: Simplify right side
    20,676.40x = 334,521,219.68
  5. Step 5: Solve for x
    x = 334,521,219.68/20,676.40
  6. Step 6: Final answer
    x = 16,178.89

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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.