Home / 20,322.96-30,489.92-8,472.80

Finding the Fourth Proportional to 20,322.96, 30,489.92 and 8,472.80

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Solution

The fourth proportional to 20,322.96, 30,489.92 and 8,472.80 is: 12,711.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,322.96 : 30,489.92 = 8,472.80 : x
  2. Step 2: Convert to fraction form
    20,322.96/30,489.92 = 8,472.80/x
  3. Step 3: Cross multiply
    20,322.96x = 30,489.92 × 8,472.80
  4. Step 4: Simplify right side
    20,322.96x = 258,334,799.36
  5. Step 5: Solve for x
    x = 258,334,799.36/20,322.96
  6. Step 6: Final answer
    x = 12,711.48

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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.