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Finding the Fourth Proportional to 28,992.68, 43,489.43 and 8,216.18

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Solution

The fourth proportional to 28,992.68, 43,489.43 and 8,216.18 is: 12,324.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,992.68 : 43,489.43 = 8,216.18 : x
  2. Step 2: Convert to fraction form
    28,992.68/43,489.43 = 8,216.18/x
  3. Step 3: Cross multiply
    28,992.68x = 43,489.43 × 8,216.18
  4. Step 4: Simplify right side
    28,992.68x = 357,316,984.98
  5. Step 5: Solve for x
    x = 357,316,984.98/28,992.68
  6. Step 6: Final answer
    x = 12,324.39

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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.