Home / 28,443.05-42,664.79-18,644.38

Finding the Fourth Proportional to 28,443.05, 42,664.79 and 18,644.38

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Solution

The fourth proportional to 28,443.05, 42,664.79 and 18,644.38 is: 27,966.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,443.05 : 42,664.79 = 18,644.38 : x
  2. Step 2: Convert to fraction form
    28,443.05/42,664.79 = 18,644.38/x
  3. Step 3: Cross multiply
    28,443.05x = 42,664.79 × 18,644.38
  4. Step 4: Simplify right side
    28,443.05x = 795,458,497.33
  5. Step 5: Solve for x
    x = 795,458,497.33/28,443.05
  6. Step 6: Final answer
    x = 27,966.71

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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.