Home / 11,905.45-17,864.25-4,890.85

Finding the Fourth Proportional to 11,905.45, 17,864.25 and 4,890.85

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Solution

The fourth proportional to 11,905.45, 17,864.25 and 4,890.85 is: 7,338.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,905.45 : 17,864.25 = 4,890.85 : x
  2. Step 2: Convert to fraction form
    11,905.45/17,864.25 = 4,890.85/x
  3. Step 3: Cross multiply
    11,905.45x = 17,864.25 × 4,890.85
  4. Step 4: Simplify right side
    11,905.45x = 87,371,367.11
  5. Step 5: Solve for x
    x = 87,371,367.11/11,905.45
  6. Step 6: Final answer
    x = 7,338.77

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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.