Home / 28,372.82-42,562.11-10,857.38

Finding the Fourth Proportional to 28,372.82, 42,562.11 and 10,857.38

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Solution

The fourth proportional to 28,372.82, 42,562.11 and 10,857.38 is: 16,287.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,372.82 : 42,562.11 = 10,857.38 : x
  2. Step 2: Convert to fraction form
    28,372.82/42,562.11 = 10,857.38/x
  3. Step 3: Cross multiply
    28,372.82x = 42,562.11 × 10,857.38
  4. Step 4: Simplify right side
    28,372.82x = 462,113,001.87
  5. Step 5: Solve for x
    x = 462,113,001.87/28,372.82
  6. Step 6: Final answer
    x = 16,287.17

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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.