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Finding the Fourth Proportional to 28,945.98, 43,418.97 and 8,169.48

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Solution

The fourth proportional to 28,945.98, 43,418.97 and 8,169.48 is: 12,254.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,945.98 : 43,418.97 = 8,169.48 : x
  2. Step 2: Convert to fraction form
    28,945.98/43,418.97 = 8,169.48/x
  3. Step 3: Cross multiply
    28,945.98x = 43,418.97 × 8,169.48
  4. Step 4: Simplify right side
    28,945.98x = 354,710,407.04
  5. Step 5: Solve for x
    x = 354,710,407.04/28,945.98
  6. Step 6: Final answer
    x = 12,254.22

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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.