Home / 20,845.92-31,315.92-12,102.24

Finding the Fourth Proportional to 20,845.92, 31,315.92 and 12,102.24

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Solution

The fourth proportional to 20,845.92, 31,315.92 and 12,102.24 is: 18,180.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,845.92 : 31,315.92 = 12,102.24 : x
  2. Step 2: Convert to fraction form
    20,845.92/31,315.92 = 12,102.24/x
  3. Step 3: Cross multiply
    20,845.92x = 31,315.92 × 12,102.24
  4. Step 4: Simplify right side
    20,845.92x = 378,992,779.66
  5. Step 5: Solve for x
    x = 378,992,779.66/20,845.92
  6. Step 6: Final answer
    x = 18,180.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.