Home / 28,103.87-42,155.79-8,396.25

Finding the Fourth Proportional to 28,103.87, 42,155.79 and 8,396.25

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Solution

The fourth proportional to 28,103.87, 42,155.79 and 8,396.25 is: 12,594.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,103.87 : 42,155.79 = 8,396.25 : x
  2. Step 2: Convert to fraction form
    28,103.87/42,155.79 = 8,396.25/x
  3. Step 3: Cross multiply
    28,103.87x = 42,155.79 × 8,396.25
  4. Step 4: Simplify right side
    28,103.87x = 353,950,551.79
  5. Step 5: Solve for x
    x = 353,950,551.79/28,103.87
  6. Step 6: Final answer
    x = 12,594.37

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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.