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Finding the Fourth Proportional to 30,806.73, 46,209.42 and 8,619.66

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Solution

The fourth proportional to 30,806.73, 46,209.42 and 8,619.66 is: 12,929.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,806.73 : 46,209.42 = 8,619.66 : x
  2. Step 2: Convert to fraction form
    30,806.73/46,209.42 = 8,619.66/x
  3. Step 3: Cross multiply
    30,806.73x = 46,209.42 × 8,619.66
  4. Step 4: Simplify right side
    30,806.73x = 398,309,489.20
  5. Step 5: Solve for x
    x = 398,309,489.20/30,806.73
  6. Step 6: Final answer
    x = 12,929.30

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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.