Home / 28,786.44-43,099-21,744.30

Finding the Fourth Proportional to 28,786.44, 43,099 and 21,744.30

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Solution

The fourth proportional to 28,786.44, 43,099 and 21,744.30 is: 32,555.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,786.44 : 43,099 = 21,744.30 : x
  2. Step 2: Convert to fraction form
    28,786.44/43,099 = 21,744.30/x
  3. Step 3: Cross multiply
    28,786.44x = 43,099 × 21,744.30
  4. Step 4: Simplify right side
    28,786.44x = 937,157,585.70
  5. Step 5: Solve for x
    x = 937,157,585.70/28,786.44
  6. Step 6: Final answer
    x = 32,555.52

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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.