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Finding the Fourth Proportional to 16,920.36, 25,365.18 and 9,609

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Solution

The fourth proportional to 16,920.36, 25,365.18 and 9,609 is: 14,404.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,920.36 : 25,365.18 = 9,609 : x
  2. Step 2: Convert to fraction form
    16,920.36/25,365.18 = 9,609/x
  3. Step 3: Cross multiply
    16,920.36x = 25,365.18 × 9,609
  4. Step 4: Simplify right side
    16,920.36x = 243,734,014.62
  5. Step 5: Solve for x
    x = 243,734,014.62/16,920.36
  6. Step 6: Final answer
    x = 14,404.78

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1.5x scale

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.