Home / 13,631.12-20,447.09-3,771.13

Finding the Fourth Proportional to 13,631.12, 20,447.09 and 3,771.13

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Solution

The fourth proportional to 13,631.12, 20,447.09 and 3,771.13 is: 5,656.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,631.12 : 20,447.09 = 3,771.13 : x
  2. Step 2: Convert to fraction form
    13,631.12/20,447.09 = 3,771.13/x
  3. Step 3: Cross multiply
    13,631.12x = 20,447.09 × 3,771.13
  4. Step 4: Simplify right side
    13,631.12x = 77,108,513.42
  5. Step 5: Solve for x
    x = 77,108,513.42/13,631.12
  6. Step 6: Final answer
    x = 5,656.80

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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.