Home / 11,111.20-16,647.60-7,213.60

Finding the Fourth Proportional to 11,111.20, 16,647.60 and 7,213.60

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Solution

The fourth proportional to 11,111.20, 16,647.60 and 7,213.60 is: 10,807.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,111.20 : 16,647.60 = 7,213.60 : x
  2. Step 2: Convert to fraction form
    11,111.20/16,647.60 = 7,213.60/x
  3. Step 3: Cross multiply
    11,111.20x = 16,647.60 × 7,213.60
  4. Step 4: Simplify right side
    11,111.20x = 120,089,127.36
  5. Step 5: Solve for x
    x = 120,089,127.36/11,111.20
  6. Step 6: Final answer
    x = 10,807.93

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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.