Home / 13,790.45-20,690.68-6,769.72

Finding the Fourth Proportional to 13,790.45, 20,690.68 and 6,769.72

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Solution

The fourth proportional to 13,790.45, 20,690.68 and 6,769.72 is: 10,157.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,790.45 : 20,690.68 = 6,769.72 : x
  2. Step 2: Convert to fraction form
    13,790.45/20,690.68 = 6,769.72/x
  3. Step 3: Cross multiply
    13,790.45x = 20,690.68 × 6,769.72
  4. Step 4: Simplify right side
    13,790.45x = 140,070,110.21
  5. Step 5: Solve for x
    x = 140,070,110.21/13,790.45
  6. Step 6: Final answer
    x = 10,157.04

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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.