Home / 13,431.21-20,126.30-5,635.77

Finding the Fourth Proportional to 13,431.21, 20,126.30 and 5,635.77

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Solution

The fourth proportional to 13,431.21, 20,126.30 and 5,635.77 is: 8,445.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,431.21 : 20,126.30 = 5,635.77 : x
  2. Step 2: Convert to fraction form
    13,431.21/20,126.30 = 5,635.77/x
  3. Step 3: Cross multiply
    13,431.21x = 20,126.30 × 5,635.77
  4. Step 4: Simplify right side
    13,431.21x = 113,427,169.57
  5. Step 5: Solve for x
    x = 113,427,169.57/13,431.21
  6. Step 6: Final answer
    x = 8,445.04

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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.