Home / 20,550.69-30,808.62-8,703.99

Finding the Fourth Proportional to 20,550.69, 30,808.62 and 8,703.99

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Solution

The fourth proportional to 20,550.69, 30,808.62 and 8,703.99 is: 13,048.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,550.69 : 30,808.62 = 8,703.99 : x
  2. Step 2: Convert to fraction form
    20,550.69/30,808.62 = 8,703.99/x
  3. Step 3: Cross multiply
    20,550.69x = 30,808.62 × 8,703.99
  4. Step 4: Simplify right side
    20,550.69x = 268,157,920.39
  5. Step 5: Solve for x
    x = 268,157,920.39/20,550.69
  6. Step 6: Final answer
    x = 13,048.61

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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.