Home / 11,421.36-17,122.32-4,491.36

Finding the Fourth Proportional to 11,421.36, 17,122.32 and 4,491.36

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Solution

The fourth proportional to 11,421.36, 17,122.32 and 4,491.36 is: 6,733.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,421.36 : 17,122.32 = 4,491.36 : x
  2. Step 2: Convert to fraction form
    11,421.36/17,122.32 = 4,491.36/x
  3. Step 3: Cross multiply
    11,421.36x = 17,122.32 × 4,491.36
  4. Step 4: Simplify right side
    11,421.36x = 76,902,503.16
  5. Step 5: Solve for x
    x = 76,902,503.16/11,421.36
  6. Step 6: Final answer
    x = 6,733.22

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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.