Home / 19,299.36-28,962-8,911.20

Finding the Fourth Proportional to 19,299.36, 28,962 and 8,911.20

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Solution

The fourth proportional to 19,299.36, 28,962 and 8,911.20 is: 13,372.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,299.36 : 28,962 = 8,911.20 : x
  2. Step 2: Convert to fraction form
    19,299.36/28,962 = 8,911.20/x
  3. Step 3: Cross multiply
    19,299.36x = 28,962 × 8,911.20
  4. Step 4: Simplify right side
    19,299.36x = 258,086,174.40
  5. Step 5: Solve for x
    x = 258,086,174.40/19,299.36
  6. Step 6: Final answer
    x = 13,372.78

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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.