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Finding the Fourth Proportional to 13,135.50, 19,703.25 and 3,901.50

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Solution

The fourth proportional to 13,135.50, 19,703.25 and 3,901.50 is: 5,852.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,135.50 : 19,703.25 = 3,901.50 : x
  2. Step 2: Convert to fraction form
    13,135.50/19,703.25 = 3,901.50/x
  3. Step 3: Cross multiply
    13,135.50x = 19,703.25 × 3,901.50
  4. Step 4: Simplify right side
    13,135.50x = 76,872,229.88
  5. Step 5: Solve for x
    x = 76,872,229.88/13,135.50
  6. Step 6: Final answer
    x = 5,852.25

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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.