Home / 16,905.70-25,338.30-7,039.90

Finding the Fourth Proportional to 16,905.70, 25,338.30 and 7,039.90

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Solution

The fourth proportional to 16,905.70, 25,338.30 and 7,039.90 is: 10,551.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,905.70 : 25,338.30 = 7,039.90 : x
  2. Step 2: Convert to fraction form
    16,905.70/25,338.30 = 7,039.90/x
  3. Step 3: Cross multiply
    16,905.70x = 25,338.30 × 7,039.90
  4. Step 4: Simplify right side
    16,905.70x = 178,379,098.17
  5. Step 5: Solve for x
    x = 178,379,098.17/16,905.70
  6. Step 6: Final answer
    x = 10,551.42

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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.