Home / 28,658.38-39,548.72-15,911.76

Finding the Fourth Proportional to 28,658.38, 39,548.72 and 15,911.76

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Solution

The fourth proportional to 28,658.38, 39,548.72 and 15,911.76 is: 21,958.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,658.38 : 39,548.72 = 15,911.76 : x
  2. Step 2: Convert to fraction form
    28,658.38/39,548.72 = 15,911.76/x
  3. Step 3: Cross multiply
    28,658.38x = 39,548.72 × 15,911.76
  4. Step 4: Simplify right side
    28,658.38x = 629,289,740.95
  5. Step 5: Solve for x
    x = 629,289,740.95/28,658.38
  6. Step 6: Final answer
    x = 21,958.32

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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.