Home / 20,412.07-30,619.59-8,553.94

Finding the Fourth Proportional to 20,412.07, 30,619.59 and 8,553.94

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Solution

The fourth proportional to 20,412.07, 30,619.59 and 8,553.94 is: 12,831.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,412.07 : 30,619.59 = 8,553.94 : x
  2. Step 2: Convert to fraction form
    20,412.07/30,619.59 = 8,553.94/x
  3. Step 3: Cross multiply
    20,412.07x = 30,619.59 × 8,553.94
  4. Step 4: Simplify right side
    20,412.07x = 261,918,135.68
  5. Step 5: Solve for x
    x = 261,918,135.68/20,412.07
  6. Step 6: Final answer
    x = 12,831.53

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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.