Home / 28,539.70-39,384.83-15,793.42

Finding the Fourth Proportional to 28,539.70, 39,384.83 and 15,793.42

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Solution

The fourth proportional to 28,539.70, 39,384.83 and 15,793.42 is: 21,794.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,539.70 : 39,384.83 = 15,793.42 : x
  2. Step 2: Convert to fraction form
    28,539.70/39,384.83 = 15,793.42/x
  3. Step 3: Cross multiply
    28,539.70x = 39,384.83 × 15,793.42
  4. Step 4: Simplify right side
    28,539.70x = 622,021,102.84
  5. Step 5: Solve for x
    x = 622,021,102.84/28,539.70
  6. Step 6: Final answer
    x = 21,794.94

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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.