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Finding the Fourth Proportional to 17,879.49, 24,672.60 and 9,921.24

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Solution

The fourth proportional to 17,879.49, 24,672.60 and 9,921.24 is: 13,690.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,879.49 : 24,672.60 = 9,921.24 : x
  2. Step 2: Convert to fraction form
    17,879.49/24,672.60 = 9,921.24/x
  3. Step 3: Cross multiply
    17,879.49x = 24,672.60 × 9,921.24
  4. Step 4: Simplify right side
    17,879.49x = 244,782,786.02
  5. Step 5: Solve for x
    x = 244,782,786.02/17,879.49
  6. Step 6: Final answer
    x = 13,690.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.