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Finding the Fourth Proportional to 28,986.17, 43,481.98 and 8,995.85

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Solution

The fourth proportional to 28,986.17, 43,481.98 and 8,995.85 is: 13,494.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,986.17 : 43,481.98 = 8,995.85 : x
  2. Step 2: Convert to fraction form
    28,986.17/43,481.98 = 8,995.85/x
  3. Step 3: Cross multiply
    28,986.17x = 43,481.98 × 8,995.85
  4. Step 4: Simplify right side
    28,986.17x = 391,157,324.80
  5. Step 5: Solve for x
    x = 391,157,324.80/28,986.17
  6. Step 6: Final answer
    x = 13,494.62

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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.