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Finding the Fourth Proportional to 12,601.92, 18,907.12 and 5,580.96

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Solution

The fourth proportional to 12,601.92, 18,907.12 and 5,580.96 is: 8,373.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,601.92 : 18,907.12 = 5,580.96 : x
  2. Step 2: Convert to fraction form
    12,601.92/18,907.12 = 5,580.96/x
  3. Step 3: Cross multiply
    12,601.92x = 18,907.12 × 5,580.96
  4. Step 4: Simplify right side
    12,601.92x = 105,519,880.44
  5. Step 5: Solve for x
    x = 105,519,880.44/12,601.92
  6. Step 6: Final answer
    x = 8,373.32

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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.