Home / 11,109.60-16,664.40-9,295.20

Finding the Fourth Proportional to 11,109.60, 16,664.40 and 9,295.20

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Solution

The fourth proportional to 11,109.60, 16,664.40 and 9,295.20 is: 13,942.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,109.60 : 16,664.40 = 9,295.20 : x
  2. Step 2: Convert to fraction form
    11,109.60/16,664.40 = 9,295.20/x
  3. Step 3: Cross multiply
    11,109.60x = 16,664.40 × 9,295.20
  4. Step 4: Simplify right side
    11,109.60x = 154,898,930.88
  5. Step 5: Solve for x
    x = 154,898,930.88/11,109.60
  6. Step 6: Final answer
    x = 13,942.80

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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.