Home / 28,472.20-39,290.82-15,896.68

Finding the Fourth Proportional to 28,472.20, 39,290.82 and 15,896.68

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Solution

The fourth proportional to 28,472.20, 39,290.82 and 15,896.68 is: 21,936.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,472.20 : 39,290.82 = 15,896.68 : x
  2. Step 2: Convert to fraction form
    28,472.20/39,290.82 = 15,896.68/x
  3. Step 3: Cross multiply
    28,472.20x = 39,290.82 × 15,896.68
  4. Step 4: Simplify right side
    28,472.20x = 624,593,592.48
  5. Step 5: Solve for x
    x = 624,593,592.48/28,472.20
  6. Step 6: Final answer
    x = 21,936.96

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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.