Home / 19,531.75-29,288.87-11,638.00

Finding the Fourth Proportional to 19,531.75, 29,288.87 and 11,638.00

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Solution

The fourth proportional to 19,531.75, 29,288.87 and 11,638.00 is: 17,451.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,531.75 : 29,288.87 = 11,638.00 : x
  2. Step 2: Convert to fraction form
    19,531.75/29,288.87 = 11,638.00/x
  3. Step 3: Cross multiply
    19,531.75x = 29,288.87 × 11,638.00
  4. Step 4: Simplify right side
    19,531.75x = 340,863,791.84
  5. Step 5: Solve for x
    x = 340,863,791.84/19,531.75
  6. Step 6: Final answer
    x = 17,451.78

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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.