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Finding the Fourth Proportional to 33,643.28, 46,429.80 and 18,739.28

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Solution

The fourth proportional to 33,643.28, 46,429.80 and 18,739.28 is: 25,861.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,643.28 : 46,429.80 = 18,739.28 : x
  2. Step 2: Convert to fraction form
    33,643.28/46,429.80 = 18,739.28/x
  3. Step 3: Cross multiply
    33,643.28x = 46,429.80 × 18,739.28
  4. Step 4: Simplify right side
    33,643.28x = 870,061,022.54
  5. Step 5: Solve for x
    x = 870,061,022.54/33,643.28
  6. Step 6: Final answer
    x = 25,861.36

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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.