Home / 20,456.85-28,230.83-11,959.30

Finding the Fourth Proportional to 20,456.85, 28,230.83 and 11,959.30

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Solution

The fourth proportional to 20,456.85, 28,230.83 and 11,959.30 is: 16,504.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,456.85 : 28,230.83 = 11,959.30 : x
  2. Step 2: Convert to fraction form
    20,456.85/28,230.83 = 11,959.30/x
  3. Step 3: Cross multiply
    20,456.85x = 28,230.83 × 11,959.30
  4. Step 4: Simplify right side
    20,456.85x = 337,620,826.76
  5. Step 5: Solve for x
    x = 337,620,826.76/20,456.85
  6. Step 6: Final answer
    x = 16,504.04

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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.