Home / 28,536.30-39,378.15-15,958.62

Finding the Fourth Proportional to 28,536.30, 39,378.15 and 15,958.62

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Solution

The fourth proportional to 28,536.30, 39,378.15 and 15,958.62 is: 22,021.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,536.30 : 39,378.15 = 15,958.62 : x
  2. Step 2: Convert to fraction form
    28,536.30/39,378.15 = 15,958.62/x
  3. Step 3: Cross multiply
    28,536.30x = 39,378.15 × 15,958.62
  4. Step 4: Simplify right side
    28,536.30x = 628,420,932.15
  5. Step 5: Solve for x
    x = 628,420,932.15/28,536.30
  6. Step 6: Final answer
    x = 22,021.81

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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.