Home / 11,209.20-16,765.20-9,459.60

Finding the Fourth Proportional to 11,209.20, 16,765.20 and 9,459.60

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Solution

The fourth proportional to 11,209.20, 16,765.20 and 9,459.60 is: 14,148.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,209.20 : 16,765.20 = 9,459.60 : x
  2. Step 2: Convert to fraction form
    11,209.20/16,765.20 = 9,459.60/x
  3. Step 3: Cross multiply
    11,209.20x = 16,765.20 × 9,459.60
  4. Step 4: Simplify right side
    11,209.20x = 158,592,085.92
  5. Step 5: Solve for x
    x = 158,592,085.92/11,209.20
  6. Step 6: Final answer
    x = 14,148.39

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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.