Home / 28,487.97-42,731.79-11,620.92

Finding the Fourth Proportional to 28,487.97, 42,731.79 and 11,620.92

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Solution

The fourth proportional to 28,487.97, 42,731.79 and 11,620.92 is: 17,431.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,487.97 : 42,731.79 = 11,620.92 : x
  2. Step 2: Convert to fraction form
    28,487.97/42,731.79 = 11,620.92/x
  3. Step 3: Cross multiply
    28,487.97x = 42,731.79 × 11,620.92
  4. Step 4: Simplify right side
    28,487.97x = 496,582,713.05
  5. Step 5: Solve for x
    x = 496,582,713.05/28,487.97
  6. Step 6: Final answer
    x = 17,431.31

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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.