Home / 39,635.14-54,695.31-21,729.54

Finding the Fourth Proportional to 39,635.14, 54,695.31 and 21,729.54

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Solution

The fourth proportional to 39,635.14, 54,695.31 and 21,729.54 is: 29,986.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,635.14 : 54,695.31 = 21,729.54 : x
  2. Step 2: Convert to fraction form
    39,635.14/54,695.31 = 21,729.54/x
  3. Step 3: Cross multiply
    39,635.14x = 54,695.31 × 21,729.54
  4. Step 4: Simplify right side
    39,635.14x = 1,188,503,926.46
  5. Step 5: Solve for x
    x = 1,188,503,926.46/39,635.14
  6. Step 6: Final answer
    x = 29,986.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.