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Finding the Fourth Proportional to 33,309.56, 45,971.88 and 21,406.88

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Solution

The fourth proportional to 33,309.56, 45,971.88 and 21,406.88 is: 29,544.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,309.56 : 45,971.88 = 21,406.88 : x
  2. Step 2: Convert to fraction form
    33,309.56/45,971.88 = 21,406.88/x
  3. Step 3: Cross multiply
    33,309.56x = 45,971.88 × 21,406.88
  4. Step 4: Simplify right side
    33,309.56x = 984,114,518.53
  5. Step 5: Solve for x
    x = 984,114,518.53/33,309.56
  6. Step 6: Final answer
    x = 29,544.51

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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.