Home / 20,676.60-28,532.84-11,724.71

Finding the Fourth Proportional to 20,676.60, 28,532.84 and 11,724.71

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Solution

The fourth proportional to 20,676.60, 28,532.84 and 11,724.71 is: 16,179.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,676.60 : 28,532.84 = 11,724.71 : x
  2. Step 2: Convert to fraction form
    20,676.60/28,532.84 = 11,724.71/x
  3. Step 3: Cross multiply
    20,676.60x = 28,532.84 × 11,724.71
  4. Step 4: Simplify right side
    20,676.60x = 334,539,073.19
  5. Step 5: Solve for x
    x = 334,539,073.19/20,676.60
  6. Step 6: Final answer
    x = 16,179.60

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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.