Home / 13,708.92-20,563.38-12,638.91

Finding the Fourth Proportional to 13,708.92, 20,563.38 and 12,638.91

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Solution

The fourth proportional to 13,708.92, 20,563.38 and 12,638.91 is: 18,958.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,708.92 : 20,563.38 = 12,638.91 : x
  2. Step 2: Convert to fraction form
    13,708.92/20,563.38 = 12,638.91/x
  3. Step 3: Cross multiply
    13,708.92x = 20,563.38 × 12,638.91
  4. Step 4: Simplify right side
    13,708.92x = 259,898,709.12
  5. Step 5: Solve for x
    x = 259,898,709.12/13,708.92
  6. Step 6: Final answer
    x = 18,958.37

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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.