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Finding the Fourth Proportional to 11,803.92, 17,697.20 and 7,125.60

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Solution

The fourth proportional to 11,803.92, 17,697.20 and 7,125.60 is: 10,683.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,803.92 : 17,697.20 = 7,125.60 : x
  2. Step 2: Convert to fraction form
    11,803.92/17,697.20 = 7,125.60/x
  3. Step 3: Cross multiply
    11,803.92x = 17,697.20 × 7,125.60
  4. Step 4: Simplify right side
    11,803.92x = 126,103,168.32
  5. Step 5: Solve for x
    x = 126,103,168.32/11,803.92
  6. Step 6: Final answer
    x = 10,683.16

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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.