Home / 11,129.20-16,688.40-6,193.60

Finding the Fourth Proportional to 11,129.20, 16,688.40 and 6,193.60

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Solution

The fourth proportional to 11,129.20, 16,688.40 and 6,193.60 is: 9,287.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,129.20 : 16,688.40 = 6,193.60 : x
  2. Step 2: Convert to fraction form
    11,129.20/16,688.40 = 6,193.60/x
  3. Step 3: Cross multiply
    11,129.20x = 16,688.40 × 6,193.60
  4. Step 4: Simplify right side
    11,129.20x = 103,361,274.24
  5. Step 5: Solve for x
    x = 103,361,274.24/11,129.20
  6. Step 6: Final answer
    x = 9,287.39

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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.