Home / 16,879.60-25,319.40-5,191.30

Finding the Fourth Proportional to 16,879.60, 25,319.40 and 5,191.30

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Solution

The fourth proportional to 16,879.60, 25,319.40 and 5,191.30 is: 7,786.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,879.60 : 25,319.40 = 5,191.30 : x
  2. Step 2: Convert to fraction form
    16,879.60/25,319.40 = 5,191.30/x
  3. Step 3: Cross multiply
    16,879.60x = 25,319.40 × 5,191.30
  4. Step 4: Simplify right side
    16,879.60x = 131,440,601.22
  5. Step 5: Solve for x
    x = 131,440,601.22/16,879.60
  6. Step 6: Final answer
    x = 7,786.95

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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.