Home / 13,932.69-20,899.35-3,402.79

Finding the Fourth Proportional to 13,932.69, 20,899.35 and 3,402.79

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Solution

The fourth proportional to 13,932.69, 20,899.35 and 3,402.79 is: 5,104.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,932.69 : 20,899.35 = 3,402.79 : x
  2. Step 2: Convert to fraction form
    13,932.69/20,899.35 = 3,402.79/x
  3. Step 3: Cross multiply
    13,932.69x = 20,899.35 × 3,402.79
  4. Step 4: Simplify right side
    13,932.69x = 71,116,146.30
  5. Step 5: Solve for x
    x = 71,116,146.30/13,932.69
  6. Step 6: Final answer
    x = 5,104.27

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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.