Home / 11,005.70-16,509.31-4,431.90

Finding the Fourth Proportional to 11,005.70, 16,509.31 and 4,431.90

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Solution

The fourth proportional to 11,005.70, 16,509.31 and 4,431.90 is: 6,648.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,005.70 : 16,509.31 = 4,431.90 : x
  2. Step 2: Convert to fraction form
    11,005.70/16,509.31 = 4,431.90/x
  3. Step 3: Cross multiply
    11,005.70x = 16,509.31 × 4,431.90
  4. Step 4: Simplify right side
    11,005.70x = 73,167,610.99
  5. Step 5: Solve for x
    x = 73,167,610.99/11,005.70
  6. Step 6: Final answer
    x = 6,648.16

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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.