Home / 11,415.20-15,753.58-6,379.54

Finding the Fourth Proportional to 11,415.20, 15,753.58 and 6,379.54

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Solution

The fourth proportional to 11,415.20, 15,753.58 and 6,379.54 is: 8,804.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,415.20 : 15,753.58 = 6,379.54 : x
  2. Step 2: Convert to fraction form
    11,415.20/15,753.58 = 6,379.54/x
  3. Step 3: Cross multiply
    11,415.20x = 15,753.58 × 6,379.54
  4. Step 4: Simplify right side
    11,415.20x = 100,500,538.42
  5. Step 5: Solve for x
    x = 100,500,538.42/11,415.20
  6. Step 6: Final answer
    x = 8,804.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.