Home / 20,775.87-28,676.84-14,490.27

Finding the Fourth Proportional to 20,775.87, 28,676.84 and 14,490.27

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Solution

The fourth proportional to 20,775.87, 28,676.84 and 14,490.27 is: 20,000.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,775.87 : 28,676.84 = 14,490.27 : x
  2. Step 2: Convert to fraction form
    20,775.87/28,676.84 = 14,490.27/x
  3. Step 3: Cross multiply
    20,775.87x = 28,676.84 × 14,490.27
  4. Step 4: Simplify right side
    20,775.87x = 415,535,081.90
  5. Step 5: Solve for x
    x = 415,535,081.90/20,775.87
  6. Step 6: Final answer
    x = 20,000.85

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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.