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Finding the Fourth Proportional to 13,507, 20,269.50 and 5,193.88

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Solution

The fourth proportional to 13,507, 20,269.50 and 5,193.88 is: 7,794.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,507 : 20,269.50 = 5,193.88 : x
  2. Step 2: Convert to fraction form
    13,507/20,269.50 = 5,193.88/x
  3. Step 3: Cross multiply
    13,507x = 20,269.50 × 5,193.88
  4. Step 4: Simplify right side
    13,507x = 105,277,350.66
  5. Step 5: Solve for x
    x = 105,277,350.66/13,507
  6. Step 6: Final answer
    x = 7,794.28

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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.