Home / 20,451.82-28,211.99-12,273.31

Finding the Fourth Proportional to 20,451.82, 28,211.99 and 12,273.31

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Solution

The fourth proportional to 20,451.82, 28,211.99 and 12,273.31 is: 16,930.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,451.82 : 28,211.99 = 12,273.31 : x
  2. Step 2: Convert to fraction form
    20,451.82/28,211.99 = 12,273.31/x
  3. Step 3: Cross multiply
    20,451.82x = 28,211.99 × 12,273.31
  4. Step 4: Simplify right side
    20,451.82x = 346,254,498.99
  5. Step 5: Solve for x
    x = 346,254,498.99/20,451.82
  6. Step 6: Final answer
    x = 16,930.25

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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.