Home / 13,861.90-20,790.62-3,866.91

Finding the Fourth Proportional to 13,861.90, 20,790.62 and 3,866.91

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Solution

The fourth proportional to 13,861.90, 20,790.62 and 3,866.91 is: 5,799.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,861.90 : 20,790.62 = 3,866.91 : x
  2. Step 2: Convert to fraction form
    13,861.90/20,790.62 = 3,866.91/x
  3. Step 3: Cross multiply
    13,861.90x = 20,790.62 × 3,866.91
  4. Step 4: Simplify right side
    13,861.90x = 80,395,395.34
  5. Step 5: Solve for x
    x = 80,395,395.34/13,861.90
  6. Step 6: Final answer
    x = 5,799.74

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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.