Home / 20,751.24-28,635.85-12,256.09

Finding the Fourth Proportional to 20,751.24, 28,635.85 and 12,256.09

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Solution

The fourth proportional to 20,751.24, 28,635.85 and 12,256.09 is: 16,912.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,751.24 : 28,635.85 = 12,256.09 : x
  2. Step 2: Convert to fraction form
    20,751.24/28,635.85 = 12,256.09/x
  3. Step 3: Cross multiply
    20,751.24x = 28,635.85 × 12,256.09
  4. Step 4: Simplify right side
    20,751.24x = 350,963,590.69
  5. Step 5: Solve for x
    x = 350,963,590.69/20,751.24
  6. Step 6: Final answer
    x = 16,912.90

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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.