Home / 16,879.20-25,316.40-5,786.40

Finding the Fourth Proportional to 16,879.20, 25,316.40 and 5,786.40

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Solution

The fourth proportional to 16,879.20, 25,316.40 and 5,786.40 is: 8,678.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,879.20 : 25,316.40 = 5,786.40 : x
  2. Step 2: Convert to fraction form
    16,879.20/25,316.40 = 5,786.40/x
  3. Step 3: Cross multiply
    16,879.20x = 25,316.40 × 5,786.40
  4. Step 4: Simplify right side
    16,879.20x = 146,490,816.96
  5. Step 5: Solve for x
    x = 146,490,816.96/16,879.20
  6. Step 6: Final answer
    x = 8,678.78

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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.