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Finding the Fourth Proportional to 16,720.90, 25,075 and 5,473.62

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Solution

The fourth proportional to 16,720.90, 25,075 and 5,473.62 is: 8,208.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,720.90 : 25,075 = 5,473.62 : x
  2. Step 2: Convert to fraction form
    16,720.90/25,075 = 5,473.62/x
  3. Step 3: Cross multiply
    16,720.90x = 25,075 × 5,473.62
  4. Step 4: Simplify right side
    16,720.90x = 137,251,021.50
  5. Step 5: Solve for x
    x = 137,251,021.50/16,720.90
  6. Step 6: Final answer
    x = 8,208.35

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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.