Home / 20,118.78-30,176.75-5,327.37

Finding the Fourth Proportional to 20,118.78, 30,176.75 and 5,327.37

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Solution

The fourth proportional to 20,118.78, 30,176.75 and 5,327.37 is: 7,990.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,118.78 : 30,176.75 = 5,327.37 : x
  2. Step 2: Convert to fraction form
    20,118.78/30,176.75 = 5,327.37/x
  3. Step 3: Cross multiply
    20,118.78x = 30,176.75 × 5,327.37
  4. Step 4: Simplify right side
    20,118.78x = 160,762,725.97
  5. Step 5: Solve for x
    x = 160,762,725.97/20,118.78
  6. Step 6: Final answer
    x = 7,990.68

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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.