Home / 20,582.36-30,879.44-8,730.03

Finding the Fourth Proportional to 20,582.36, 30,879.44 and 8,730.03

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Solution

The fourth proportional to 20,582.36, 30,879.44 and 8,730.03 is: 13,097.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,582.36 : 30,879.44 = 8,730.03 : x
  2. Step 2: Convert to fraction form
    20,582.36/30,879.44 = 8,730.03/x
  3. Step 3: Cross multiply
    20,582.36x = 30,879.44 × 8,730.03
  4. Step 4: Simplify right side
    20,582.36x = 269,578,437.58
  5. Step 5: Solve for x
    x = 269,578,437.58/20,582.36
  6. Step 6: Final answer
    x = 13,097.55

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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.