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Finding the Fourth Proportional to 19,246.85, 28,879.85 and 10,808.12

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Solution

The fourth proportional to 19,246.85, 28,879.85 and 10,808.12 is: 16,217.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,246.85 : 28,879.85 = 10,808.12 : x
  2. Step 2: Convert to fraction form
    19,246.85/28,879.85 = 10,808.12/x
  3. Step 3: Cross multiply
    19,246.85x = 28,879.85 × 10,808.12
  4. Step 4: Simplify right side
    19,246.85x = 312,136,685.94
  5. Step 5: Solve for x
    x = 312,136,685.94/19,246.85
  6. Step 6: Final answer
    x = 16,217.55

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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.