Home / 30,933.20-42,687.60-16,786.16

Finding the Fourth Proportional to 30,933.20, 42,687.60 and 16,786.16

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Solution

The fourth proportional to 30,933.20, 42,687.60 and 16,786.16 is: 23,164.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,933.20 : 42,687.60 = 16,786.16 : x
  2. Step 2: Convert to fraction form
    30,933.20/42,687.60 = 16,786.16/x
  3. Step 3: Cross multiply
    30,933.20x = 42,687.60 × 16,786.16
  4. Step 4: Simplify right side
    30,933.20x = 716,560,883.62
  5. Step 5: Solve for x
    x = 716,560,883.62/30,933.20
  6. Step 6: Final answer
    x = 23,164.78

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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.