Home / 28,728.07-43,080.31-10,965.20

Finding the Fourth Proportional to 28,728.07, 43,080.31 and 10,965.20

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Solution

The fourth proportional to 28,728.07, 43,080.31 and 10,965.20 is: 16,443.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,728.07 : 43,080.31 = 10,965.20 : x
  2. Step 2: Convert to fraction form
    28,728.07/43,080.31 = 10,965.20/x
  3. Step 3: Cross multiply
    28,728.07x = 43,080.31 × 10,965.20
  4. Step 4: Simplify right side
    28,728.07x = 472,383,944.98
  5. Step 5: Solve for x
    x = 472,383,944.98/28,728.07
  6. Step 6: Final answer
    x = 16,443.29

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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.