Home / 19,450.28-29,128.64-11,105.00

Finding the Fourth Proportional to 19,450.28, 29,128.64 and 11,105.00

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Solution

The fourth proportional to 19,450.28, 29,128.64 and 11,105.00 is: 16,630.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,450.28 : 29,128.64 = 11,105.00 : x
  2. Step 2: Convert to fraction form
    19,450.28/29,128.64 = 11,105.00/x
  3. Step 3: Cross multiply
    19,450.28x = 29,128.64 × 11,105.00
  4. Step 4: Simplify right side
    19,450.28x = 323,473,346.03
  5. Step 5: Solve for x
    x = 323,473,346.03/19,450.28
  6. Step 6: Final answer
    x = 16,630.79

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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.