Home / 16,880.32-25,310.76-5,190.40

Finding the Fourth Proportional to 16,880.32, 25,310.76 and 5,190.40

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Solution

The fourth proportional to 16,880.32, 25,310.76 and 5,190.40 is: 7,782.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,880.32 : 25,310.76 = 5,190.40 : x
  2. Step 2: Convert to fraction form
    16,880.32/25,310.76 = 5,190.40/x
  3. Step 3: Cross multiply
    16,880.32x = 25,310.76 × 5,190.40
  4. Step 4: Simplify right side
    16,880.32x = 131,372,968.70
  5. Step 5: Solve for x
    x = 131,372,968.70/16,880.32
  6. Step 6: Final answer
    x = 7,782.61

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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.