Home / 28,428.27-42,650.60-8,709.73

Finding the Fourth Proportional to 28,428.27, 42,650.60 and 8,709.73

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Solution

The fourth proportional to 28,428.27, 42,650.60 and 8,709.73 is: 13,067.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,428.27 : 42,650.60 = 8,709.73 : x
  2. Step 2: Convert to fraction form
    28,428.27/42,650.60 = 8,709.73/x
  3. Step 3: Cross multiply
    28,428.27x = 42,650.60 × 8,709.73
  4. Step 4: Simplify right side
    28,428.27x = 371,475,109.16
  5. Step 5: Solve for x
    x = 371,475,109.16/28,428.27
  6. Step 6: Final answer
    x = 13,067.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.