Home / 19,879.20-29,810.70-6,724.80

Finding the Fourth Proportional to 19,879.20, 29,810.70 and 6,724.80

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Solution

The fourth proportional to 19,879.20, 29,810.70 and 6,724.80 is: 10,084.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,879.20 : 29,810.70 = 6,724.80 : x
  2. Step 2: Convert to fraction form
    19,879.20/29,810.70 = 6,724.80/x
  3. Step 3: Cross multiply
    19,879.20x = 29,810.70 × 6,724.80
  4. Step 4: Simplify right side
    19,879.20x = 200,470,995.36
  5. Step 5: Solve for x
    x = 200,470,995.36/19,879.20
  6. Step 6: Final answer
    x = 10,084.46

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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.