Home / 20,826.89-28,741.87-11,874.30

Finding the Fourth Proportional to 20,826.89, 28,741.87 and 11,874.30

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Solution

The fourth proportional to 20,826.89, 28,741.87 and 11,874.30 is: 16,386.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,826.89 : 28,741.87 = 11,874.30 : x
  2. Step 2: Convert to fraction form
    20,826.89/28,741.87 = 11,874.30/x
  3. Step 3: Cross multiply
    20,826.89x = 28,741.87 × 11,874.30
  4. Step 4: Simplify right side
    20,826.89x = 341,289,586.94
  5. Step 5: Solve for x
    x = 341,289,586.94/20,826.89
  6. Step 6: Final answer
    x = 16,386.97

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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.